Abstract

Terahertz (THz) radiation characteristics have been investigated for voltage-biased photoswitching devices (PSDs) coupled with dipole antennas made on magnetoresistive Pr0.7Ca0.3MnO3 thin films. Even under a fixed illumination of femtosecond laser pulses with a power of 14μJcm2, we find the high electric strength in PSDs made on Pr0.7Ca0.3MnO3 thin films in the charge-ordered (CO) state at 10K. THz radiation linearly enhances with an increase of the biased electric field up to 400kVcm without any change of the waveform of the radiated THz pulse. On the other hand, the static time-averaged photoconductance is nearly constant below 200kVcm but deviates from it above 200kVcm. Such behavior can be ascribed to an increase in the change of the fraction of photogenerated metallic patches within the CO insulating phase. Therefore our findings show that not only Pr0.7Ca0.3MnO3 but also other manganites having a CO state above room temperature may act as efficient THz radiation sources.

© 2006 Optical Society of America

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  1. Y. Tokura, "Correlated-electron physics in transition-metal oxides," Phys. Today 56(7), 50-55 (2003).
    [CrossRef]
  2. Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura, "Anomalous magnetotransport properties of Pr1−xCaxMnO3," J. Phys. Soc. Jpn. 64, 3626-3630 (1995).
    [CrossRef]
  3. K. Miyano, T. Tanaka, Y. Tomioka, and Y. Tokura, "Photoinduced insulator-to-metal transition in a perovskite manganite," Phys. Rev. Lett. 78, 4257-4260 (1997).
    [CrossRef]
  4. M. Fiebig, K. Miyano, Y. Tomioka, and Y. Tokura, "Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite," Appl. Phys. B 71, 211-215 (2000).
    [CrossRef]
  5. N. Kida and M. Tonouchi, "Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 78, 4115-4117 (2001).
    [CrossRef]
  6. N. Kida and M. Tonouchi, "Reversible and bistable terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 82, 3412-3414 (2003).
    [CrossRef]
  7. N. Kida, K. Takahashi, and M. Tonouchi, "Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films," Opt. Lett. 29, 2554-2556 (2004).
    [CrossRef] [PubMed]
  8. M. van Exter, Ch. Fattinger, and D. Grischkowsky, "High-brightness terahertz beams characterized with an ultrafast detector," Appl. Phys. Lett. 55, 337-339 (1989).
    [CrossRef]
  9. N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Terahertz radiation characteristics of voltage-biased photoswitching devices made on magnetoresistive Pr0.7Ca0.3MnO3 thin films."
  10. I. G. Deac, J. F. Mitchell, and P. Schiffer, "Phase separation and low-field bulk magnetic properties of Pr0.7Ca0.3MnO3," Phys. Rev. B 63, 172408-1-4 (2001).
    [CrossRef]
  11. C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
    [CrossRef]
  12. N. Kida and M. Tonouchi, "Spectroscopic evidence for a charge-density-wave condensate in a charge-ordered manganite: observation of a collective excitation mode in Pr0.7Ca0.3MnO3 by using THz time-domain spectroscopy," Phys. Rev. B 66, 024401-1-8 (2002).
    [CrossRef]
  13. M. Tonouchi, M. Yamashita, and M. Hangyo, "Terahertz radiation imaging of supercurrent distribution in vortex-penetrated YBa2Cu3O7−delta thin film strips," J. Appl. Phys. 87, 7366-7375 (2000).
    [CrossRef]
  14. N. Kida, H. Murakami, and M. Tonouchi, "Terahertz optics in strongly correlated electron systems," in Terahertz Optoelectronics, K.Sakai, ed. (Springer-Verlag, 2005), Chap. 8.
    [CrossRef]
  15. B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
    [CrossRef]
  16. J. K. Luo, H. Thomas, D. V. Morgan, and D. Westwood, "Thermal annealing effect on low temperature molecular beam epitaxy grown GaAs: arsenic precipitation and the change of resistivity," Appl. Phys. Lett. 64, 3614-3616 (1994).
    [CrossRef]
  17. P. K. Benicewicz and A. J. Tayler, "Scaling of terahertz radiation from large-aperture biased InP photoconductors," Opt. Lett. 18, 1332-1334 (1993).
    [CrossRef] [PubMed]
  18. J. F. Holzman and A. Y. Elezzabi, "Two-photon photoconductive terahertz generation in ZnSe," Appl. Phys. Lett. 83, 2967-2969 (2003).
    [CrossRef]
  19. H. Yonera, K. Tokuyama, K. Ueda, H. Yamamoto, and K. Baba, "High-power terahertz radiation emitter with a diamond photoconductive switch array," Appl. Opt. 40, 6733-6736 (2001).
    [CrossRef]
  20. M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
    [CrossRef]
  21. N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Ultrafast photoinduced switching of terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films."
  22. C. Ludwig and J. Kuhl, "Studies of the temporal and spectral shape of terahertz pulses generated from photoconducting switches," Appl. Phys. Lett. 69, 1194-1196 (1996).
    [CrossRef]
  23. D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
    [CrossRef] [PubMed]

2004 (2)

N. Kida, K. Takahashi, and M. Tonouchi, "Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films," Opt. Lett. 29, 2554-2556 (2004).
[CrossRef] [PubMed]

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

2003 (4)

J. F. Holzman and A. Y. Elezzabi, "Two-photon photoconductive terahertz generation in ZnSe," Appl. Phys. Lett. 83, 2967-2969 (2003).
[CrossRef]

N. Kida and M. Tonouchi, "Reversible and bistable terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 82, 3412-3414 (2003).
[CrossRef]

Y. Tokura, "Correlated-electron physics in transition-metal oxides," Phys. Today 56(7), 50-55 (2003).
[CrossRef]

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

2002 (1)

N. Kida and M. Tonouchi, "Spectroscopic evidence for a charge-density-wave condensate in a charge-ordered manganite: observation of a collective excitation mode in Pr0.7Ca0.3MnO3 by using THz time-domain spectroscopy," Phys. Rev. B 66, 024401-1-8 (2002).
[CrossRef]

2001 (3)

H. Yonera, K. Tokuyama, K. Ueda, H. Yamamoto, and K. Baba, "High-power terahertz radiation emitter with a diamond photoconductive switch array," Appl. Opt. 40, 6733-6736 (2001).
[CrossRef]

N. Kida and M. Tonouchi, "Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 78, 4115-4117 (2001).
[CrossRef]

I. G. Deac, J. F. Mitchell, and P. Schiffer, "Phase separation and low-field bulk magnetic properties of Pr0.7Ca0.3MnO3," Phys. Rev. B 63, 172408-1-4 (2001).
[CrossRef]

2000 (2)

M. Fiebig, K. Miyano, Y. Tomioka, and Y. Tokura, "Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite," Appl. Phys. B 71, 211-215 (2000).
[CrossRef]

M. Tonouchi, M. Yamashita, and M. Hangyo, "Terahertz radiation imaging of supercurrent distribution in vortex-penetrated YBa2Cu3O7−delta thin film strips," J. Appl. Phys. 87, 7366-7375 (2000).
[CrossRef]

1999 (1)

M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
[CrossRef]

1997 (1)

K. Miyano, T. Tanaka, Y. Tomioka, and Y. Tokura, "Photoinduced insulator-to-metal transition in a perovskite manganite," Phys. Rev. Lett. 78, 4257-4260 (1997).
[CrossRef]

1996 (1)

C. Ludwig and J. Kuhl, "Studies of the temporal and spectral shape of terahertz pulses generated from photoconducting switches," Appl. Phys. Lett. 69, 1194-1196 (1996).
[CrossRef]

1995 (1)

Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura, "Anomalous magnetotransport properties of Pr1−xCaxMnO3," J. Phys. Soc. Jpn. 64, 3626-3630 (1995).
[CrossRef]

1994 (1)

J. K. Luo, H. Thomas, D. V. Morgan, and D. Westwood, "Thermal annealing effect on low temperature molecular beam epitaxy grown GaAs: arsenic precipitation and the change of resistivity," Appl. Phys. Lett. 64, 3614-3616 (1994).
[CrossRef]

1993 (1)

1990 (1)

B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
[CrossRef]

1989 (1)

M. van Exter, Ch. Fattinger, and D. Grischkowsky, "High-brightness terahertz beams characterized with an ultrafast detector," Appl. Phys. Lett. 55, 337-339 (1989).
[CrossRef]

Akahoshi, D.

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

Arima, T.

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

Asamitsu, A.

Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura, "Anomalous magnetotransport properties of Pr1−xCaxMnO3," J. Phys. Soc. Jpn. 64, 3626-3630 (1995).
[CrossRef]

Auston, D. H.

B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
[CrossRef]

Baba, K.

Benicewicz, P. K.

Biswas, A.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Casa, D.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Darrow, J. T.

B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
[CrossRef]

Deac, I. G.

I. G. Deac, J. F. Mitchell, and P. Schiffer, "Phase separation and low-field bulk magnetic properties of Pr0.7Ca0.3MnO3," Phys. Rev. B 63, 172408-1-4 (2001).
[CrossRef]

Elezzabi, A. Y.

J. F. Holzman and A. Y. Elezzabi, "Two-photon photoconductive terahertz generation in ZnSe," Appl. Phys. Lett. 83, 2967-2969 (2003).
[CrossRef]

Fattinger, Ch.

M. van Exter, Ch. Fattinger, and D. Grischkowsky, "High-brightness terahertz beams characterized with an ultrafast detector," Appl. Phys. Lett. 55, 337-339 (1989).
[CrossRef]

Fiebig, M.

M. Fiebig, K. Miyano, Y. Tomioka, and Y. Tokura, "Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite," Appl. Phys. B 71, 211-215 (2000).
[CrossRef]

M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
[CrossRef]

Gibbs, D.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Giles, C.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Gog, T.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Greene, R. L.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Grischkowsky, D.

M. van Exter, Ch. Fattinger, and D. Grischkowsky, "High-brightness terahertz beams characterized with an ultrafast detector," Appl. Phys. Lett. 55, 337-339 (1989).
[CrossRef]

Hangyo, M.

M. Tonouchi, M. Yamashita, and M. Hangyo, "Terahertz radiation imaging of supercurrent distribution in vortex-penetrated YBa2Cu3O7−delta thin film strips," J. Appl. Phys. 87, 7366-7375 (2000).
[CrossRef]

Hill, J. P.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Holzman, J. F.

J. F. Holzman and A. Y. Elezzabi, "Two-photon photoconductive terahertz generation in ZnSe," Appl. Phys. Lett. 83, 2967-2969 (2003).
[CrossRef]

Hu, B. B.

B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
[CrossRef]

Kida, N.

N. Kida, K. Takahashi, and M. Tonouchi, "Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films," Opt. Lett. 29, 2554-2556 (2004).
[CrossRef] [PubMed]

N. Kida and M. Tonouchi, "Reversible and bistable terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 82, 3412-3414 (2003).
[CrossRef]

N. Kida and M. Tonouchi, "Spectroscopic evidence for a charge-density-wave condensate in a charge-ordered manganite: observation of a collective excitation mode in Pr0.7Ca0.3MnO3 by using THz time-domain spectroscopy," Phys. Rev. B 66, 024401-1-8 (2002).
[CrossRef]

N. Kida and M. Tonouchi, "Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 78, 4115-4117 (2001).
[CrossRef]

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Terahertz radiation characteristics of voltage-biased photoswitching devices made on magnetoresistive Pr0.7Ca0.3MnO3 thin films."

N. Kida, H. Murakami, and M. Tonouchi, "Terahertz optics in strongly correlated electron systems," in Terahertz Optoelectronics, K.Sakai, ed. (Springer-Verlag, 2005), Chap. 8.
[CrossRef]

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Ultrafast photoinduced switching of terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films."

Kuhl, J.

C. Ludwig and J. Kuhl, "Studies of the temporal and spectral shape of terahertz pulses generated from photoconducting switches," Appl. Phys. Lett. 69, 1194-1196 (1996).
[CrossRef]

Ludwig, C.

C. Ludwig and J. Kuhl, "Studies of the temporal and spectral shape of terahertz pulses generated from photoconducting switches," Appl. Phys. Lett. 69, 1194-1196 (1996).
[CrossRef]

Luo, J. K.

J. K. Luo, H. Thomas, D. V. Morgan, and D. Westwood, "Thermal annealing effect on low temperature molecular beam epitaxy grown GaAs: arsenic precipitation and the change of resistivity," Appl. Phys. Lett. 64, 3614-3616 (1994).
[CrossRef]

Matsui, Y.

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

Millis, A. J.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Mitchell, J. F.

I. G. Deac, J. F. Mitchell, and P. Schiffer, "Phase separation and low-field bulk magnetic properties of Pr0.7Ca0.3MnO3," Phys. Rev. B 63, 172408-1-4 (2001).
[CrossRef]

Miyano, K.

M. Fiebig, K. Miyano, Y. Tomioka, and Y. Tokura, "Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite," Appl. Phys. B 71, 211-215 (2000).
[CrossRef]

M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
[CrossRef]

K. Miyano, T. Tanaka, Y. Tomioka, and Y. Tokura, "Photoinduced insulator-to-metal transition in a perovskite manganite," Phys. Rev. Lett. 78, 4257-4260 (1997).
[CrossRef]

Morgan, D. V.

J. K. Luo, H. Thomas, D. V. Morgan, and D. Westwood, "Thermal annealing effect on low temperature molecular beam epitaxy grown GaAs: arsenic precipitation and the change of resistivity," Appl. Phys. Lett. 64, 3614-3616 (1994).
[CrossRef]

Moritomo, Y.

Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura, "Anomalous magnetotransport properties of Pr1−xCaxMnO3," J. Phys. Soc. Jpn. 64, 3626-3630 (1995).
[CrossRef]

Murakami, H.

N. Kida, H. Murakami, and M. Tonouchi, "Terahertz optics in strongly correlated electron systems," in Terahertz Optoelectronics, K.Sakai, ed. (Springer-Verlag, 2005), Chap. 8.
[CrossRef]

Nelson, C. S.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Rajeswari, M.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Satoh, T.

M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
[CrossRef]

Schiffer, P.

I. G. Deac, J. F. Mitchell, and P. Schiffer, "Phase separation and low-field bulk magnetic properties of Pr0.7Ca0.3MnO3," Phys. Rev. B 63, 172408-1-4 (2001).
[CrossRef]

Shinde, S.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Smith, P. R.

B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
[CrossRef]

Takahashi, K.

N. Kida, K. Takahashi, and M. Tonouchi, "Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films," Opt. Lett. 29, 2554-2556 (2004).
[CrossRef] [PubMed]

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Terahertz radiation characteristics of voltage-biased photoswitching devices made on magnetoresistive Pr0.7Ca0.3MnO3 thin films."

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Ultrafast photoinduced switching of terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films."

Tanaka, T.

K. Miyano, T. Tanaka, Y. Tomioka, and Y. Tokura, "Photoinduced insulator-to-metal transition in a perovskite manganite," Phys. Rev. Lett. 78, 4257-4260 (1997).
[CrossRef]

Tayler, A. J.

Thomas, H.

J. K. Luo, H. Thomas, D. V. Morgan, and D. Westwood, "Thermal annealing effect on low temperature molecular beam epitaxy grown GaAs: arsenic precipitation and the change of resistivity," Appl. Phys. Lett. 64, 3614-3616 (1994).
[CrossRef]

Tokura, Y.

Y. Tokura, "Correlated-electron physics in transition-metal oxides," Phys. Today 56(7), 50-55 (2003).
[CrossRef]

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

M. Fiebig, K. Miyano, Y. Tomioka, and Y. Tokura, "Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite," Appl. Phys. B 71, 211-215 (2000).
[CrossRef]

M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
[CrossRef]

K. Miyano, T. Tanaka, Y. Tomioka, and Y. Tokura, "Photoinduced insulator-to-metal transition in a perovskite manganite," Phys. Rev. Lett. 78, 4257-4260 (1997).
[CrossRef]

Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura, "Anomalous magnetotransport properties of Pr1−xCaxMnO3," J. Phys. Soc. Jpn. 64, 3626-3630 (1995).
[CrossRef]

Tokuyama, K.

Tomioka, Y.

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

M. Fiebig, K. Miyano, Y. Tomioka, and Y. Tokura, "Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite," Appl. Phys. B 71, 211-215 (2000).
[CrossRef]

M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
[CrossRef]

K. Miyano, T. Tanaka, Y. Tomioka, and Y. Tokura, "Photoinduced insulator-to-metal transition in a perovskite manganite," Phys. Rev. Lett. 78, 4257-4260 (1997).
[CrossRef]

Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura, "Anomalous magnetotransport properties of Pr1−xCaxMnO3," J. Phys. Soc. Jpn. 64, 3626-3630 (1995).
[CrossRef]

Tonouchi, M.

N. Kida, K. Takahashi, and M. Tonouchi, "Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films," Opt. Lett. 29, 2554-2556 (2004).
[CrossRef] [PubMed]

N. Kida and M. Tonouchi, "Reversible and bistable terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 82, 3412-3414 (2003).
[CrossRef]

N. Kida and M. Tonouchi, "Spectroscopic evidence for a charge-density-wave condensate in a charge-ordered manganite: observation of a collective excitation mode in Pr0.7Ca0.3MnO3 by using THz time-domain spectroscopy," Phys. Rev. B 66, 024401-1-8 (2002).
[CrossRef]

N. Kida and M. Tonouchi, "Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 78, 4115-4117 (2001).
[CrossRef]

M. Tonouchi, M. Yamashita, and M. Hangyo, "Terahertz radiation imaging of supercurrent distribution in vortex-penetrated YBa2Cu3O7−delta thin film strips," J. Appl. Phys. 87, 7366-7375 (2000).
[CrossRef]

N. Kida, H. Murakami, and M. Tonouchi, "Terahertz optics in strongly correlated electron systems," in Terahertz Optoelectronics, K.Sakai, ed. (Springer-Verlag, 2005), Chap. 8.
[CrossRef]

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Terahertz radiation characteristics of voltage-biased photoswitching devices made on magnetoresistive Pr0.7Ca0.3MnO3 thin films."

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Ultrafast photoinduced switching of terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films."

Uchida, M.

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

Ueda, K.

van Exter, M.

M. van Exter, Ch. Fattinger, and D. Grischkowsky, "High-brightness terahertz beams characterized with an ultrafast detector," Appl. Phys. Lett. 55, 337-339 (1989).
[CrossRef]

Venkataraman, C. T.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Venkatesan, T.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Westwood, D.

J. K. Luo, H. Thomas, D. V. Morgan, and D. Westwood, "Thermal annealing effect on low temperature molecular beam epitaxy grown GaAs: arsenic precipitation and the change of resistivity," Appl. Phys. Lett. 64, 3614-3616 (1994).
[CrossRef]

Yamamoto, H.

Yamashita, M.

M. Tonouchi, M. Yamashita, and M. Hangyo, "Terahertz radiation imaging of supercurrent distribution in vortex-penetrated YBa2Cu3O7−delta thin film strips," J. Appl. Phys. 87, 7366-7375 (2000).
[CrossRef]

Yokaichiya, F.

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Yonera, H.

Zhang, X.-C.

B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
[CrossRef]

Appl. Opt. (1)

Appl. Phys. B (1)

M. Fiebig, K. Miyano, Y. Tomioka, and Y. Tokura, "Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite," Appl. Phys. B 71, 211-215 (2000).
[CrossRef]

Appl. Phys. Lett. (7)

N. Kida and M. Tonouchi, "Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 78, 4115-4117 (2001).
[CrossRef]

N. Kida and M. Tonouchi, "Reversible and bistable terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films," Appl. Phys. Lett. 82, 3412-3414 (2003).
[CrossRef]

M. van Exter, Ch. Fattinger, and D. Grischkowsky, "High-brightness terahertz beams characterized with an ultrafast detector," Appl. Phys. Lett. 55, 337-339 (1989).
[CrossRef]

B. B. Hu, J. T. Darrow, X.-C. Zhang, D. H. Auston, and P. R. Smith, "Optically steerable photoconducting antennas," Appl. Phys. Lett. 56, 886-888 (1990).
[CrossRef]

J. K. Luo, H. Thomas, D. V. Morgan, and D. Westwood, "Thermal annealing effect on low temperature molecular beam epitaxy grown GaAs: arsenic precipitation and the change of resistivity," Appl. Phys. Lett. 64, 3614-3616 (1994).
[CrossRef]

C. Ludwig and J. Kuhl, "Studies of the temporal and spectral shape of terahertz pulses generated from photoconducting switches," Appl. Phys. Lett. 69, 1194-1196 (1996).
[CrossRef]

J. F. Holzman and A. Y. Elezzabi, "Two-photon photoconductive terahertz generation in ZnSe," Appl. Phys. Lett. 83, 2967-2969 (2003).
[CrossRef]

J. Appl. Phys. (1)

M. Tonouchi, M. Yamashita, and M. Hangyo, "Terahertz radiation imaging of supercurrent distribution in vortex-penetrated YBa2Cu3O7−delta thin film strips," J. Appl. Phys. 87, 7366-7375 (2000).
[CrossRef]

J. Phys. Soc. Jpn. (1)

Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura, "Anomalous magnetotransport properties of Pr1−xCaxMnO3," J. Phys. Soc. Jpn. 64, 3626-3630 (1995).
[CrossRef]

J. Phys.: Condens. Matter (1)

C. S. Nelson, J. P. Hill, D. Gibbs, M. Rajeswari, A. Biswas, S. Shinde, R. L. Greene, T. Venkatesan, A. J. Millis, F. Yokaichiya, C. Giles, D. Casa, C. T. Venkataraman, and T. Gog, "Substrate-induced strain effects on Pr0.6Ca0.4MnO3 films," J. Phys.: Condens. Matter 16, 13-27 (2004).
[CrossRef]

Opt. Lett. (2)

Phys. Rev. B (3)

N. Kida and M. Tonouchi, "Spectroscopic evidence for a charge-density-wave condensate in a charge-ordered manganite: observation of a collective excitation mode in Pr0.7Ca0.3MnO3 by using THz time-domain spectroscopy," Phys. Rev. B 66, 024401-1-8 (2002).
[CrossRef]

I. G. Deac, J. F. Mitchell, and P. Schiffer, "Phase separation and low-field bulk magnetic properties of Pr0.7Ca0.3MnO3," Phys. Rev. B 63, 172408-1-4 (2001).
[CrossRef]

M. Fiebig, K. Miyano, T. Satoh, Y. Tomioka, and Y. Tokura, "Action spectra of the two-stage photoinduced insulator-metal transition in Pr1−xCaxMnO3," Phys. Rev. B 60, 7944-7949 (1999).
[CrossRef]

Phys. Rev. Lett. (2)

D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui, and Y. Tokura, "Random potential effect near the bicritical region in perovskite manganites as revealed by comparison with the ordered perovskite analogs," Phys. Rev. Lett. 90, 177203-1-4 (2003).
[CrossRef] [PubMed]

K. Miyano, T. Tanaka, Y. Tomioka, and Y. Tokura, "Photoinduced insulator-to-metal transition in a perovskite manganite," Phys. Rev. Lett. 78, 4257-4260 (1997).
[CrossRef]

Phys. Today (1)

Y. Tokura, "Correlated-electron physics in transition-metal oxides," Phys. Today 56(7), 50-55 (2003).
[CrossRef]

Other (3)

N. Kida, H. Murakami, and M. Tonouchi, "Terahertz optics in strongly correlated electron systems," in Terahertz Optoelectronics, K.Sakai, ed. (Springer-Verlag, 2005), Chap. 8.
[CrossRef]

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Terahertz radiation characteristics of voltage-biased photoswitching devices made on magnetoresistive Pr0.7Ca0.3MnO3 thin films."

N. Kida, K. Takahashi, and M. Tonouchi are preparing a manuscript titled "Ultrafast photoinduced switching of terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films."

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Figures (4)

Fig. 1
Fig. 1

Experimental scheme for THz radiation and detection. The photograph of the photoswitching device coupled with the dipole antenna made on Pr 0.7 Ca 0.3 Mn O 3 thin film is superimposed in the schematic. The light gray and dark gray areas are Pr 0.7 Ca 0.3 Mn O 3 and Au, respectively.

Fig. 2
Fig. 2

(a) Radiated THz pulse in the time domain. The delay time at which the amplitude reaches the maximum value E THz (marked by an arrow), is offset to 0 ps , as indicated by the vertical line. The horizontal line represents the zero level. (b) The radiated THz power spectrum in the frequency domain. (c) Contour plot of E THz around the gap of the antenna, which is obtained by monitoring E THz , as indicated by the vertical line in (a) and by moving the sample along the x and y directions using the computer-driven x y stage, as shown in Fig. 1.

Fig. 3
Fig. 3

(a) Bias electric field E bias dependence of the maximum peak amplitude E THz at 0 ps (closed squares). (b) Contour plot of the radiated THz pulse as a function of E bias . Each data is normalized by the value of E THz at respective E bias for comparison. We also show E bias dependence of (c) the total time-averaged photocurrent I photo of Pr 0.7 Ca 0.3 Mn O 3 and (d) the corresponding photoconductance σ photo . Gray lines in (a), (c), and (d) are least-squares fits to the data using Eq. (1), assuming the linear response of E bias , and the constant value ( 4.6 × 10 9 S ) , respectively.

Fig. 4
Fig. 4

Schematic illustration of the coexistence of the photogenerated metallic patches (gray areas) and the CO insulating phase (white areas) under various bias electric field E bias ; (a) E bias < 200 kV cm and (b) 200 kV cm < E bias < 400 kV cm . The arrows represent the direction of the current path between electrodes made of Au (dark gray areas).

Equations (1)

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E THz η 0 σ photo E bias η 0 σ photo + 1 + ϵ s ,

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