Abstract

The optical and dielectric constants of Cs have been obtained above the plasma frequency. The measurements were made on Cs films evaporated on a plane surface of quartz and CaF<sub>2</sub> semicylindrical substrates, at 10<sup>-6</sup> torr. The refractive index <i>n</i> is determined from the critical angle for total internal reflection at the Cs-substrate interface. The absorption coefficient <i>k</i> is determined from the slope of the curve at the critical angle. The real part of the complex dielectric constant ∊<sub>l</sub> differs from the value predicted by the nearly free-electron model. The effect is attributed to the existence of transitions from inner shells at higher photon energies and to interband transitions and plasmon-assisted transitions at lower energies. The derived parameters in this energy region are 4π<i>n</i><sub>0</sub>α=0.37±0.01, <i>m</i><sub>eff</sub>=1.05±0.05 m, and ħω<sub>p</sub>=2.87±0.07 eV.

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  1. J. C. Sutherland, R. N. Hamm, and E. T. Arakawa, J. Opt. Soc. Am. 59, 1581 (1969).
  2. H. Mayer and B. Hietel, in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abelès (North-Holland, Amsterdam, 1966).
  3. N. V. Smith, Phys. Rev. B 2, 2840 (1970).
  4. M. H. Cohen, Phil. Mag. 3, 762 (1958).
  5. U. S. Whang, E. T. Arakawa, and T. A. Callcott, Phys. Rev. Letters 25, 646 (1970).
  6. B. I. Lundqvist and C. Lydén, in Proceedings of thte Electronic Density of States Symposium, Natl. Bur. Std. (U. S.) (U. S. Govt. Printing Office, Washington, D. C., 1969), p. 50.
  7. R. Janow and N. Tzoar, Bull. Am. Phys. Soc. 15, 368 (1970).
  8. H. E. Ives and H. B. Briggs, J. Opt. Soc. Am. 27, 395 (1937).
  9. J. C. Sutherland and E. T. Arakawa, J. Opt. Soc. Am. 58, 1080 (1968).
  10. U. S. Whang, T. A. Callcott, and E. T. Arakawa, Oak Ridge National Laboratory Report ORNL-TM-2622 (1970). The best films as judged by color (gold tint) and stability with time after evaporation were those formed in 10 s or less.
  11. L. Holland, The Properties of Glass Surfaces (Wiley, New York, 1964), p. 290.
  12. R. N. Hamm, R. A. MacRae, and E. T. Arakawa, J. Opt. Soc. Am. 55, 1460 (1965).
  13. G. Horton, E. T. Arakawa, R. N. Hamm, and M. W. Williams, Appl. Opt. 8, 1734 (1969).
  14. W. R. Hunter, J. Opt. Soc. Am. 54, 15 (1964).
  15. P. N. Butcher, J. Phys. A 64, 765 (1951).
  16. J. J. Hopfield, Phys. Rev. 139, A 419 (1965).
  17. N. V. Smith, Phys. Rev. 183, 634 (1969).
  18. J. J. Lander and J. Morrison, Surface Sci. 14, 465 (1969).
  19. C. Kunz, Z. Physik 196, 311 (1966).
  20. B. M. Hartley, Phys. Letters 24A, 396 (1967).
  21. J. A. Bearden and A. F. Burr, Rev. Mod. Phys. 39, 125 (1967)

Arakawa, E. T.

J. C. Sutherland, R. N. Hamm, and E. T. Arakawa, J. Opt. Soc. Am. 59, 1581 (1969).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, Phys. Rev. Letters 25, 646 (1970).

J. C. Sutherland and E. T. Arakawa, J. Opt. Soc. Am. 58, 1080 (1968).

U. S. Whang, T. A. Callcott, and E. T. Arakawa, Oak Ridge National Laboratory Report ORNL-TM-2622 (1970). The best films as judged by color (gold tint) and stability with time after evaporation were those formed in 10 s or less.

R. N. Hamm, R. A. MacRae, and E. T. Arakawa, J. Opt. Soc. Am. 55, 1460 (1965).

G. Horton, E. T. Arakawa, R. N. Hamm, and M. W. Williams, Appl. Opt. 8, 1734 (1969).

Bearden, J. A.

J. A. Bearden and A. F. Burr, Rev. Mod. Phys. 39, 125 (1967)

Briggs, H. B.

H. E. Ives and H. B. Briggs, J. Opt. Soc. Am. 27, 395 (1937).

Burr, A. F.

J. A. Bearden and A. F. Burr, Rev. Mod. Phys. 39, 125 (1967)

Butcher, P. N.

P. N. Butcher, J. Phys. A 64, 765 (1951).

Callcott, T. A.

U. S. Whang, T. A. Callcott, and E. T. Arakawa, Oak Ridge National Laboratory Report ORNL-TM-2622 (1970). The best films as judged by color (gold tint) and stability with time after evaporation were those formed in 10 s or less.

U. S. Whang, E. T. Arakawa, and T. A. Callcott, Phys. Rev. Letters 25, 646 (1970).

Cohen, M. H.

M. H. Cohen, Phil. Mag. 3, 762 (1958).

Hamm, R. N.

J. C. Sutherland, R. N. Hamm, and E. T. Arakawa, J. Opt. Soc. Am. 59, 1581 (1969).

R. N. Hamm, R. A. MacRae, and E. T. Arakawa, J. Opt. Soc. Am. 55, 1460 (1965).

G. Horton, E. T. Arakawa, R. N. Hamm, and M. W. Williams, Appl. Opt. 8, 1734 (1969).

Hartley, B. M.

B. M. Hartley, Phys. Letters 24A, 396 (1967).

Hietel, B.

H. Mayer and B. Hietel, in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abelès (North-Holland, Amsterdam, 1966).

Holland, L.

L. Holland, The Properties of Glass Surfaces (Wiley, New York, 1964), p. 290.

Hopfield, J. J.

J. J. Hopfield, Phys. Rev. 139, A 419 (1965).

Horton, G.

G. Horton, E. T. Arakawa, R. N. Hamm, and M. W. Williams, Appl. Opt. 8, 1734 (1969).

Hunter, W. R.

W. R. Hunter, J. Opt. Soc. Am. 54, 15 (1964).

Ives, H. E.

H. E. Ives and H. B. Briggs, J. Opt. Soc. Am. 27, 395 (1937).

Janow, R.

R. Janow and N. Tzoar, Bull. Am. Phys. Soc. 15, 368 (1970).

Kunz, C.

C. Kunz, Z. Physik 196, 311 (1966).

Lander, J. J.

J. J. Lander and J. Morrison, Surface Sci. 14, 465 (1969).

Lundqvist, B. I.

B. I. Lundqvist and C. Lydén, in Proceedings of thte Electronic Density of States Symposium, Natl. Bur. Std. (U. S.) (U. S. Govt. Printing Office, Washington, D. C., 1969), p. 50.

Lydén, C.

B. I. Lundqvist and C. Lydén, in Proceedings of thte Electronic Density of States Symposium, Natl. Bur. Std. (U. S.) (U. S. Govt. Printing Office, Washington, D. C., 1969), p. 50.

MacRae, R. A.

R. N. Hamm, R. A. MacRae, and E. T. Arakawa, J. Opt. Soc. Am. 55, 1460 (1965).

Mayer, H.

H. Mayer and B. Hietel, in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abelès (North-Holland, Amsterdam, 1966).

Morrison, J.

J. J. Lander and J. Morrison, Surface Sci. 14, 465 (1969).

Smith, N. V.

N. V. Smith, Phys. Rev. 183, 634 (1969).

N. V. Smith, Phys. Rev. B 2, 2840 (1970).

Sutherland, J. C.

J. C. Sutherland, R. N. Hamm, and E. T. Arakawa, J. Opt. Soc. Am. 59, 1581 (1969).

J. C. Sutherland and E. T. Arakawa, J. Opt. Soc. Am. 58, 1080 (1968).

Tzoar, N.

R. Janow and N. Tzoar, Bull. Am. Phys. Soc. 15, 368 (1970).

Whang, U. S.

U. S. Whang, E. T. Arakawa, and T. A. Callcott, Phys. Rev. Letters 25, 646 (1970).

U. S. Whang, T. A. Callcott, and E. T. Arakawa, Oak Ridge National Laboratory Report ORNL-TM-2622 (1970). The best films as judged by color (gold tint) and stability with time after evaporation were those formed in 10 s or less.

Williams, M. W.

G. Horton, E. T. Arakawa, R. N. Hamm, and M. W. Williams, Appl. Opt. 8, 1734 (1969).

Other (21)

J. C. Sutherland, R. N. Hamm, and E. T. Arakawa, J. Opt. Soc. Am. 59, 1581 (1969).

H. Mayer and B. Hietel, in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abelès (North-Holland, Amsterdam, 1966).

N. V. Smith, Phys. Rev. B 2, 2840 (1970).

M. H. Cohen, Phil. Mag. 3, 762 (1958).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, Phys. Rev. Letters 25, 646 (1970).

B. I. Lundqvist and C. Lydén, in Proceedings of thte Electronic Density of States Symposium, Natl. Bur. Std. (U. S.) (U. S. Govt. Printing Office, Washington, D. C., 1969), p. 50.

R. Janow and N. Tzoar, Bull. Am. Phys. Soc. 15, 368 (1970).

H. E. Ives and H. B. Briggs, J. Opt. Soc. Am. 27, 395 (1937).

J. C. Sutherland and E. T. Arakawa, J. Opt. Soc. Am. 58, 1080 (1968).

U. S. Whang, T. A. Callcott, and E. T. Arakawa, Oak Ridge National Laboratory Report ORNL-TM-2622 (1970). The best films as judged by color (gold tint) and stability with time after evaporation were those formed in 10 s or less.

L. Holland, The Properties of Glass Surfaces (Wiley, New York, 1964), p. 290.

R. N. Hamm, R. A. MacRae, and E. T. Arakawa, J. Opt. Soc. Am. 55, 1460 (1965).

G. Horton, E. T. Arakawa, R. N. Hamm, and M. W. Williams, Appl. Opt. 8, 1734 (1969).

W. R. Hunter, J. Opt. Soc. Am. 54, 15 (1964).

P. N. Butcher, J. Phys. A 64, 765 (1951).

J. J. Hopfield, Phys. Rev. 139, A 419 (1965).

N. V. Smith, Phys. Rev. 183, 634 (1969).

J. J. Lander and J. Morrison, Surface Sci. 14, 465 (1969).

C. Kunz, Z. Physik 196, 311 (1966).

B. M. Hartley, Phys. Letters 24A, 396 (1967).

J. A. Bearden and A. F. Burr, Rev. Mod. Phys. 39, 125 (1967)

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