Abstract

Using dispersive finite-difference time-domain (D-FDTD) simulations, we show that a pair of gold nanodisks stacked in a ‘sandwich’- like (end-fire) configuration produces a large enhancement of the magnetic field when irradiated with a plane optical wave, if the distance between the nanodisks is optically small. The effect, which can be rationalized in terms of a magnetic dipole resonance, is due the excitation of a hybridized asymmetric plasmon mode, in which the induced electrical dipoles in the two disks oscillate out-of-phase. The strong magnetic response, together with the simple morphology, suggests that Au nanosandwiches are suitable elementary building blocks for optical metamaterials that exhibit negative refraction.

© 2006 Optical Society of America

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    [CrossRef] [PubMed]
  10. S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  12. S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
    [CrossRef] [PubMed]
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2006 (5)

A. K. Sarychev, G. Shvets and V. M. Shalaev, "Magnetic plasmon resonance," Phys. Rev. E 73,036609 (2006).
[CrossRef]

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

A. Dmitriev, T. Pakizeh, M. Käll, and D. S. Sutherland, "Surface plasmon hybridization in gold-silica-gold nanosandwiches," Nano Lett., submitted, (2006).

E. Ozbay, "Plasmonics: Merging photonics and electronics at nanoscale dimentions," Science 311,189-193 (2006).
[CrossRef] [PubMed]

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Science 440,508-511 (2006).

2005 (5)

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

L. Gunnarsson, T. Rindzevicius, J. Prikulis, B. Kasemo, M. K¨ all, S. Zou and G. C. Schatz, "Confined plasmons in nanofabricated single silver particles pairs: experimental observation of strong interparticle interactions," J. Phys. Chem. B 109,1079-1087 (2005).
[CrossRef]

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

2004 (3)

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

D. R. Smith, J. B. Pendry and M. C. K. Wiltshire, "Metamaterials and negative refractive index," Science 305,788-792 (2004).
[CrossRef] [PubMed]

2003 (3)

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424,824-830 (2003).
[CrossRef] [PubMed]

V. A. Podolskiy, A. K. Sarychev and V. M. Shalaev, "Plasmon modes and negative refraction in metal nanowire composites," Opt. Express 11,735-745 (2003).
[CrossRef] [PubMed]

P. Hanarp, M. Käll, and D. S. Sutherland, "Optical properties of short range ordered arrays of nanometer gold disks prepared by colloidal lithography," J. Phys. Chem. B 107,5768-5772 (2003).
[CrossRef]

2000 (1)

G. X. Fan and Q. H. Liu, "An FDTD algorithm with perfectly matched layers for general dispersive media," IEEE Trans. Antennas Propag. 48,637-646 (2000).
[CrossRef]

1996 (1)

D. F. Kelly and R. J. Luebbers, "Piecewise linear recursive convolution for dispersive media using FDTD," IEEE Trans. Antennas Propag. 44,792-797 (1996).
[CrossRef]

1972 (1)

P. B. Johnson and R. W. Christy, "Optical constants of the nobel metals," Phys. Rev. B 6,4370-4379 (1972).
[CrossRef]

Barnes, W. L.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424,824-830 (2003).
[CrossRef] [PubMed]

Basov, D. N.

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

Bozhevolnyi, S. I.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Science 440,508-511 (2006).

Brueck, S. R. J.

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

Burger, S.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

Cai, W.

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

Chettiar, U. K.

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

Christy, R. W.

P. B. Johnson and R. W. Christy, "Optical constants of the nobel metals," Phys. Rev. B 6,4370-4379 (1972).
[CrossRef]

Dereux, A.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424,824-830 (2003).
[CrossRef] [PubMed]

Devaux, E.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Science 440,508-511 (2006).

Dmitriev, A.

A. Dmitriev, T. Pakizeh, M. Käll, and D. S. Sutherland, "Surface plasmon hybridization in gold-silica-gold nanosandwiches," Nano Lett., submitted, (2006).

Drachev, V. P.

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

Ebbesen, T. W.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Science 440,508-511 (2006).

W. L. Barnes, A. Dereux, and T. W. Ebbesen, "Surface plasmon subwavelength optics," Nature 424,824-830 (2003).
[CrossRef] [PubMed]

Enkrich, C.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

Fan, G. X.

G. X. Fan and Q. H. Liu, "An FDTD algorithm with perfectly matched layers for general dispersive media," IEEE Trans. Antennas Propag. 48,637-646 (2000).
[CrossRef]

Fan, W.

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

Fang, N.

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

Firsov, A. A.

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

Geim, A. K.

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

Gleeson, H. F.

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

Grigorenko, A. N.

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

Gunnarsson, L.

L. Gunnarsson, T. Rindzevicius, J. Prikulis, B. Kasemo, M. K¨ all, S. Zou and G. C. Schatz, "Confined plasmons in nanofabricated single silver particles pairs: experimental observation of strong interparticle interactions," J. Phys. Chem. B 109,1079-1087 (2005).
[CrossRef]

Hanarp, P.

P. Hanarp, M. Käll, and D. S. Sutherland, "Optical properties of short range ordered arrays of nanometer gold disks prepared by colloidal lithography," J. Phys. Chem. B 107,5768-5772 (2003).
[CrossRef]

Johnson, P. B.

P. B. Johnson and R. W. Christy, "Optical constants of the nobel metals," Phys. Rev. B 6,4370-4379 (1972).
[CrossRef]

Käll, M.

A. Dmitriev, T. Pakizeh, M. Käll, and D. S. Sutherland, "Surface plasmon hybridization in gold-silica-gold nanosandwiches," Nano Lett., submitted, (2006).

P. Hanarp, M. Käll, and D. S. Sutherland, "Optical properties of short range ordered arrays of nanometer gold disks prepared by colloidal lithography," J. Phys. Chem. B 107,5768-5772 (2003).
[CrossRef]

Kasemo, B.

L. Gunnarsson, T. Rindzevicius, J. Prikulis, B. Kasemo, M. K¨ all, S. Zou and G. C. Schatz, "Confined plasmons in nanofabricated single silver particles pairs: experimental observation of strong interparticle interactions," J. Phys. Chem. B 109,1079-1087 (2005).
[CrossRef]

Kelly, D. F.

D. F. Kelly and R. J. Luebbers, "Piecewise linear recursive convolution for dispersive media using FDTD," IEEE Trans. Antennas Propag. 44,792-797 (1996).
[CrossRef]

Khrushchev, I. Y.

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

Kildishev, A. V.

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

Klimeck, G.

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

Koschny, T.

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

Koschny, Th.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

Laluet, J.-Y

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Science 440,508-511 (2006).

Linden, S.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

Liu, Q. H.

G. X. Fan and Q. H. Liu, "An FDTD algorithm with perfectly matched layers for general dispersive media," IEEE Trans. Antennas Propag. 48,637-646 (2000).
[CrossRef]

Luebbers, R. J.

D. F. Kelly and R. J. Luebbers, "Piecewise linear recursive convolution for dispersive media using FDTD," IEEE Trans. Antennas Propag. 44,792-797 (1996).
[CrossRef]

Malloy, K. J.

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

Osgood, R. M.

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

Ozbay, E.

E. Ozbay, "Plasmonics: Merging photonics and electronics at nanoscale dimentions," Science 311,189-193 (2006).
[CrossRef] [PubMed]

Padilla, W. J.

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

Pakizeh, T.

A. Dmitriev, T. Pakizeh, M. Käll, and D. S. Sutherland, "Surface plasmon hybridization in gold-silica-gold nanosandwiches," Nano Lett., submitted, (2006).

Panoiu, N. C.

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

Pendry, J. B.

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

D. R. Smith, J. B. Pendry and M. C. K. Wiltshire, "Metamaterials and negative refractive index," Science 305,788-792 (2004).
[CrossRef] [PubMed]

Petrovic, J.

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

Podolskiy, V. A.

Prikulis, J.

L. Gunnarsson, T. Rindzevicius, J. Prikulis, B. Kasemo, M. K¨ all, S. Zou and G. C. Schatz, "Confined plasmons in nanofabricated single silver particles pairs: experimental observation of strong interparticle interactions," J. Phys. Chem. B 109,1079-1087 (2005).
[CrossRef]

Rindzevicius, T.

L. Gunnarsson, T. Rindzevicius, J. Prikulis, B. Kasemo, M. K¨ all, S. Zou and G. C. Schatz, "Confined plasmons in nanofabricated single silver particles pairs: experimental observation of strong interparticle interactions," J. Phys. Chem. B 109,1079-1087 (2005).
[CrossRef]

Sarychev, A. K.

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

A. K. Sarychev, G. Shvets and V. M. Shalaev, "Magnetic plasmon resonance," Phys. Rev. E 73,036609 (2006).
[CrossRef]

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

V. A. Podolskiy, A. K. Sarychev and V. M. Shalaev, "Plasmon modes and negative refraction in metal nanowire composites," Opt. Express 11,735-745 (2003).
[CrossRef] [PubMed]

Schmidt, F.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

Shalaev, V. M.

A. K. Sarychev, G. Shvets and V. M. Shalaev, "Magnetic plasmon resonance," Phys. Rev. E 73,036609 (2006).
[CrossRef]

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

V. A. Podolskiy, A. K. Sarychev and V. M. Shalaev, "Plasmon modes and negative refraction in metal nanowire composites," Opt. Express 11,735-745 (2003).
[CrossRef] [PubMed]

Shvets, G.

A. K. Sarychev, G. Shvets and V. M. Shalaev, "Magnetic plasmon resonance," Phys. Rev. E 73,036609 (2006).
[CrossRef]

Smith, D. R.

D. R. Smith, J. B. Pendry and M. C. K. Wiltshire, "Metamaterials and negative refractive index," Science 305,788-792 (2004).
[CrossRef] [PubMed]

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

Soukoulis, C.

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

Soukoulis, C. M.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

Sutherland, D. S.

A. Dmitriev, T. Pakizeh, M. Käll, and D. S. Sutherland, "Surface plasmon hybridization in gold-silica-gold nanosandwiches," Nano Lett., submitted, (2006).

P. Hanarp, M. Käll, and D. S. Sutherland, "Optical properties of short range ordered arrays of nanometer gold disks prepared by colloidal lithography," J. Phys. Chem. B 107,5768-5772 (2003).
[CrossRef]

Vier, D. C.

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

Volkov, V. S.

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Science 440,508-511 (2006).

Wegener, M.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

Wiltshire, M. C. K.

D. R. Smith, J. B. Pendry and M. C. K. Wiltshire, "Metamaterials and negative refractive index," Science 305,788-792 (2004).
[CrossRef] [PubMed]

Yen, T. J.

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

Yuan, H. -K.

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

V. M. Shalaev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, V. P. Drachev and A. V. Kildishev, "Negative index of refraction in optical metamaterials," Opt. Lett. 30,3356-3358 (2005).
[CrossRef]

Zhang, S.

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

Zhang, X.

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

Zhang, Y.

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

Zhou, J.

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

Zhou, J. F.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

Zschiedrich, L.

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

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L. Gunnarsson, T. Rindzevicius, J. Prikulis, B. Kasemo, M. K¨ all, S. Zou and G. C. Schatz, "Confined plasmons in nanofabricated single silver particles pairs: experimental observation of strong interparticle interactions," J. Phys. Chem. B 109,1079-1087 (2005).
[CrossRef]

P. Hanarp, M. Käll, and D. S. Sutherland, "Optical properties of short range ordered arrays of nanometer gold disks prepared by colloidal lithography," J. Phys. Chem. B 107,5768-5772 (2003).
[CrossRef]

Laser Phys. Lett. (1)

V. P. Drachev, W. Cai, U. K. Chettiar, H. -K. Yuan, A. K. Sarychev, A. V. Kildishev, G. Klimeck and V. M. Shalaev, "Experimental verification of an optical negative index material," Laser Phys. Lett. 3,49-55 (2006).
[CrossRef]

Nano Lett. (1)

A. Dmitriev, T. Pakizeh, M. Käll, and D. S. Sutherland, "Surface plasmon hybridization in gold-silica-gold nanosandwiches," Nano Lett., submitted, (2006).

Nature (2)

A. N. Grigorenko, A. K. Geim, H. F. Gleeson, Y. Zhang, A. A. Firsov, I. Y. Khrushchev and J. Petrovic, "Nanofabricated media with negative permeability at visible frequencies," Nature 438,335-338 (2005).
[CrossRef] [PubMed]

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[CrossRef]

Phys. Rev. E (1)

A. K. Sarychev, G. Shvets and V. M. Shalaev, "Magnetic plasmon resonance," Phys. Rev. E 73,036609 (2006).
[CrossRef]

Phys. Rev. Lett. (2)

C. Enkrich, M. Wegener, S. Linden, S. Burger, L. Zschiedrich, F. Schmidt, J. F. Zhou, Th. Koschny and C. M. Soukoulis, "Magnetic metamaterials at telecommunication and visible frequencies," Phys. Rev. Lett. 95,203901 (2005).
[CrossRef] [PubMed]

S. Zhang, W. Fan, N. C. Panoiu, K. J. Malloy, R. M. Osgood and S. R. J. Brueck, "Exeprimental demonstration of near-Infrared negative-index metamaterials," Phys. Rev. Lett. 95,137404 (2005).
[CrossRef] [PubMed]

Science (5)

T. J. Yen, W. J. Padilla, N. Fang, D. C. Vier, D. R. Smith, J. B. Pendry, D. N. Basov and X. Zhang, "Terahertz magnetic response from artficial materials," Science 303,1494-1496 (2004).
[CrossRef] [PubMed]

S. Linden, C. Enkrich, M. Wegener, J. Zhou, T. Koschny and C. Soukoulis, "Magentic response of metamaterials at 100 terahertz," Science 306,1351-1353 (2004).
[CrossRef] [PubMed]

E. Ozbay, "Plasmonics: Merging photonics and electronics at nanoscale dimentions," Science 311,189-193 (2006).
[CrossRef] [PubMed]

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Science 440,508-511 (2006).

D. R. Smith, J. B. Pendry and M. C. K. Wiltshire, "Metamaterials and negative refractive index," Science 305,788-792 (2004).
[CrossRef] [PubMed]

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C. F. Bohren and D. R. Huffman, Absorption and Scattering of Light by Small Particles (John Wiley, 1983).

U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters (Springer, 1995).

A. Taflove and S. C. Hagness, Computaional Electrodynamics: The Finite-Difference Time-Domain Method (Artech House, 2005).

D. M. Sullivan, Electromagnetic Simulation Using the FDTD Method (IEEE Press, 2000).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

Schematic illustration of the studied system. Two closely spaced Au nanodisks (separation d) with degenerate LSP resonance frequencies ω 0 interact vertically in the “end-fire” illumination configuration. The coupling results in two hybridized LSP modes associated with a net electric dipole moment (ω+) and a net magnetic dipole moment (ω+).

Fig. 2.
Fig. 2.

Electric (Ex ) and magnetic (Hy ) fields around Au nanodisks illuminated in the end-fire configuration (disk diameters - 88 nm, thicknesses - 24 nm). (a) Field enhancement plots for d =300 nm together with intensity enhancement spectra at two different locations (lower graph; blue and red curves for magnetic and electric fields, respectively). (b) Same as in (a), but for an inter-disk separation of d =32 nm.

Fig. 3.
Fig. 3.

Electric-field phase variation along a line parallel to the z-axis, 4 nm from the side of sandwich in the xy-plane, for the two resonance wavelengths at 575 nm - blue curve, at 700 nm - red curve. The nanodisk position are shown schematically in the background.

Fig. 4.
Fig. 4.

(a) Differential far-field scattering spectra along the three coordinate axis for the same sandwich structure as in Fig. 2b). (b) Spectral peak position and corresponding magnetic intensity enhancement factor at the mid point between the disks vs. inter-disk separation. (c) Magnetic-field intensity-enhancement vs. peak-shift relative to the non-hybridized system.

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