Abstract

Optical constants of Li have been determined between 0 and 10.7 eV, using Kramers-Kronig analysis of the reflectance data. The dielectric constant ∊ = ∊<sub>1</sub> + <i>i</i>∊<sub>2</sub> and the optical conductivity are deduced and compared with theoretical calculations. The plasma energy as determined from the condition ∊<sub>1</sub>(ω) = 0 is near 6.73 eV and the energy loss function peaks at 6.90 eV. The effective mass <i>m</i>* deduced from the analysis of ∊<sub>1</sub> in terms of a nearly-free-electron model is found equal to 1.80m. The optical conductivity exhibits important differences from the theoretical calculations. These discrepancies have been attributed to properties of the metal surfaces measured, particularly roughness and granularity.

© 1977 Optical Society of America

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  1. See, for instance, "Simple metals," in Optical Properties and Electronic Structure of Metals and Alloys, editedby F. Abeles (North-Holland, Amsterdam, 1966), pp. 1–94.
  2. N. V. Smith, "Optical constants of sodium and potassium from 0.5 to 4.0 eV by split-beam ellipsometry," Phys. Rev. 183, 634–644 (1969).
  3. N. V. Smith, "Optical constants of rubidium and cesium from 0.5 to 4.0 eV," Phys. Rev. B 2, 2840–2848 (1970).
  4. S. Yamaguchi and T. Hanyu, "Optical properties of potassium, J. Phys. Soc. Japan 31, 1431–1441 (1971); "The optical properties of Rb," J. Phys. Soc. Japan 35, 1371–1377 (1973); "Optical properties of Cs," J. Phys. Soc. Japan 37, 994–999 (1974).
  5. U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Cs for photons of energy 3. 6–9. 6 eV, " J. Opt. Soc. Am. 61, 740–745 (1971).
  6. U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Rb between 3.3 and 10.5 eV, " Phys. Rev. B 5, 2118–2124 (1972).
  7. U. S. Whang, E. T. Arakawa and T. A. Callcott, "Optical properties of K between 4 and 10.7 eV and comparison, with Na, Rb, and Cs," Phys. Rev. B 6, 2109–2118 (1972).
  8. J. Monin and G. A. Boutry, "Optical and photoelectric properties of alkali metals," Phys. Rev. B 9, 1309–1327 (1974).
  9. T. A. Callcott and E. T. Arakawa, "Ultraviolet optical properties of Li," J. Opt. Soc. Am. 64, 839–845 (1974).
  10. T. Inagaki, L. C. Emerson, E. T. Arakawa, and M. W. Williams, "Optical properties of solid Na and Li between 0.6 and 3.8 eV," Phys. Rev. B 13, 2305–2313 (1976).
  11. A. G. Mathewson and H. P. Myers, "Absolute values of the optical constants of some pure metals, " Phys. Scripta 4, 291–292 (1971); "The optical absorption spectrum of lithium metal in the range 0.5–4 eV, " Philos. Mag. 25, 853–863 (1972).
  12. J. Bösenberg, "Bestimmung der optischen konstanten von lithium und natrium durch optisch angeregte oberflächenplasmaschwingungen, "Z. Phys. Chem. Abt. B 22, 261–271 (1975).
  13. B. I. Bennet and S. H. Vosko, "Calculation of the interband optical conductivity of sodium and potassium," Phys. Rev. B 6, 2119–2131 (1972).
  14. D. J. Stevenson, "Optical absorption in the alkali metals: Detailed calculations," Phys. Rev. B 7, 2348–2358 (1973).
  15. J. P. Perdew and S. H. Vosko, "Calculation of the band structure, form surface, and interband optical conductivity of lithium," J. Phys. F: Metal Phys. 4, 380–393 (1974).
  16. W. Y. Ching and J. Callaway, "Band structure, cohesive energy, optical conductivity, and compton profile of lithium," Phys. Rev. B 9, 5115–5121 (1974).
  17. M. Rasigni and G. Rasigni, "Experimental study of the optical absorption and structure of very thin lithium deposits, " J. Opt. Soc. Am. 62, 1033–1036 (1972); "Anomalies of the optical properties of thin lithium layers and their relation to similar anomalies observed with other alkali metals," J. Opt. Soc. Am. 63, 775–785 (1973).
  18. M. Rasigni, G. Rasigni, and J. P. Palmari, "Absorption interbande, absorption intrabande, oscillations collectives, dans les dépôts très minces de lithium étudiés sous ultra vide statique," Philos. Mag. 31, 1307–1325 (1975).
  19. M. Rasigni, J. P. Gasparini, G. Rasigni, and R. Fraisse, "Collective oscillations and interband absorption in granular deposits of lithium, prepared and studied at 6 K," Solid State Commun. 18, 629–631 (1976).
  20. M. Rasigni, G. Rasigni, J. P. Gasparini, and R. Fraisse, "Structure and optical conductivity of thin lithium deposits prepared at 6 K," J. App. Phys. 47, 1757–1761 (1976).
  21. M. Rasigni and G. Rasigni, "The effects of interband, intraband and surface plasmon processes on the reflectivity of Li films," J. Opt. Soc. Am. 66, 826–830 (1976).
  22. D. W. Berreman, "Anomalous reststrahl structure from slight surface roughness," Phys. Rev. 163, 855–864 (1967); "Resonant reflectance anomalies: Effect of shapes of surfaces irregularities," Phys. Rev. B 1, 381–389 (1970); "Reflectance and ellipsometry when submicroscopic particles bestrew a surface," J. Opt. Soc. Am. 60, 499–505 (1970).
  23. D. Beaglehole and O. Hunderi, "Study of the interaction of light with rough metal surface. I. Experiment," Phys. Rev. B 2, 309–321 (1970); "Study of the interaction of light with rough metal surface. III. Theory," Phys. Rev. B 2, 321–329 (1970).
  24. F. Stern, "Elementary theory of the optical properties of solids," in Solid State Physics, Vol. 15, edited by F. Seitz and D. Turnbull (Academic, New York, 1963), pp. 333–340.
  25. F. Wooten, Optical Properties of Solids, (Academic, New York, 1972) p. 249.
  26. C. Kunz, "Messung charakteristischer energieverluste von elektronenan leichtoxydierbaren metallen im ultrahochvakuum," Z. Phys. 196, 311–331 (1966).
  27. M. H. Cohen, "Optical constants, heat capacity and the Fermi surface," Philos. Mag. 3, 762–775 (1958).
  28. J. N. Hodgson, "The optical properties and electronic band structure of lithium," in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abeles (NorthHolland, Amsterdam 1966) pp. 60–65.
  29. A. H. Wilson, The theory of metals (Cambridge, New York, 1936), p. 133.
  30. P. N. Butcher, "The absorption of light by alkali metals," Proc. Phys. Soc. London Ser. A 64, 765–772 (1951).
  31. F. S. Ham, "Energy bands of alkali metals. I. Calculated bands," Phys. Rev. 128, 82–97 (1962); "Energy bands ofalkali metals. II. Fermi surface," Phys. Rev. 128, 2524–2541 (1962).
  32. A. O. E. Animalu, "Optical conductivity of simple metals," Phys. Rev. 163, 557–562 (1967).
  33. C. S. Barrett, "A low temperature transformation inlithium," Phys. Rev. 72, 245–245 (1947).

1976 (4)

T. Inagaki, L. C. Emerson, E. T. Arakawa, and M. W. Williams, "Optical properties of solid Na and Li between 0.6 and 3.8 eV," Phys. Rev. B 13, 2305–2313 (1976).

M. Rasigni, J. P. Gasparini, G. Rasigni, and R. Fraisse, "Collective oscillations and interband absorption in granular deposits of lithium, prepared and studied at 6 K," Solid State Commun. 18, 629–631 (1976).

M. Rasigni, G. Rasigni, J. P. Gasparini, and R. Fraisse, "Structure and optical conductivity of thin lithium deposits prepared at 6 K," J. App. Phys. 47, 1757–1761 (1976).

M. Rasigni and G. Rasigni, "The effects of interband, intraband and surface plasmon processes on the reflectivity of Li films," J. Opt. Soc. Am. 66, 826–830 (1976).

1975 (2)

J. Bösenberg, "Bestimmung der optischen konstanten von lithium und natrium durch optisch angeregte oberflächenplasmaschwingungen, "Z. Phys. Chem. Abt. B 22, 261–271 (1975).

M. Rasigni, G. Rasigni, and J. P. Palmari, "Absorption interbande, absorption intrabande, oscillations collectives, dans les dépôts très minces de lithium étudiés sous ultra vide statique," Philos. Mag. 31, 1307–1325 (1975).

1974 (4)

J. P. Perdew and S. H. Vosko, "Calculation of the band structure, form surface, and interband optical conductivity of lithium," J. Phys. F: Metal Phys. 4, 380–393 (1974).

W. Y. Ching and J. Callaway, "Band structure, cohesive energy, optical conductivity, and compton profile of lithium," Phys. Rev. B 9, 5115–5121 (1974).

J. Monin and G. A. Boutry, "Optical and photoelectric properties of alkali metals," Phys. Rev. B 9, 1309–1327 (1974).

T. A. Callcott and E. T. Arakawa, "Ultraviolet optical properties of Li," J. Opt. Soc. Am. 64, 839–845 (1974).

1973 (1)

D. J. Stevenson, "Optical absorption in the alkali metals: Detailed calculations," Phys. Rev. B 7, 2348–2358 (1973).

1972 (4)

M. Rasigni and G. Rasigni, "Experimental study of the optical absorption and structure of very thin lithium deposits, " J. Opt. Soc. Am. 62, 1033–1036 (1972); "Anomalies of the optical properties of thin lithium layers and their relation to similar anomalies observed with other alkali metals," J. Opt. Soc. Am. 63, 775–785 (1973).

B. I. Bennet and S. H. Vosko, "Calculation of the interband optical conductivity of sodium and potassium," Phys. Rev. B 6, 2119–2131 (1972).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Rb between 3.3 and 10.5 eV, " Phys. Rev. B 5, 2118–2124 (1972).

U. S. Whang, E. T. Arakawa and T. A. Callcott, "Optical properties of K between 4 and 10.7 eV and comparison, with Na, Rb, and Cs," Phys. Rev. B 6, 2109–2118 (1972).

1971 (3)

S. Yamaguchi and T. Hanyu, "Optical properties of potassium, J. Phys. Soc. Japan 31, 1431–1441 (1971); "The optical properties of Rb," J. Phys. Soc. Japan 35, 1371–1377 (1973); "Optical properties of Cs," J. Phys. Soc. Japan 37, 994–999 (1974).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Cs for photons of energy 3. 6–9. 6 eV, " J. Opt. Soc. Am. 61, 740–745 (1971).

A. G. Mathewson and H. P. Myers, "Absolute values of the optical constants of some pure metals, " Phys. Scripta 4, 291–292 (1971); "The optical absorption spectrum of lithium metal in the range 0.5–4 eV, " Philos. Mag. 25, 853–863 (1972).

1970 (2)

N. V. Smith, "Optical constants of rubidium and cesium from 0.5 to 4.0 eV," Phys. Rev. B 2, 2840–2848 (1970).

D. Beaglehole and O. Hunderi, "Study of the interaction of light with rough metal surface. I. Experiment," Phys. Rev. B 2, 309–321 (1970); "Study of the interaction of light with rough metal surface. III. Theory," Phys. Rev. B 2, 321–329 (1970).

1969 (1)

N. V. Smith, "Optical constants of sodium and potassium from 0.5 to 4.0 eV by split-beam ellipsometry," Phys. Rev. 183, 634–644 (1969).

1967 (2)

D. W. Berreman, "Anomalous reststrahl structure from slight surface roughness," Phys. Rev. 163, 855–864 (1967); "Resonant reflectance anomalies: Effect of shapes of surfaces irregularities," Phys. Rev. B 1, 381–389 (1970); "Reflectance and ellipsometry when submicroscopic particles bestrew a surface," J. Opt. Soc. Am. 60, 499–505 (1970).

A. O. E. Animalu, "Optical conductivity of simple metals," Phys. Rev. 163, 557–562 (1967).

1966 (1)

C. Kunz, "Messung charakteristischer energieverluste von elektronenan leichtoxydierbaren metallen im ultrahochvakuum," Z. Phys. 196, 311–331 (1966).

1962 (1)

F. S. Ham, "Energy bands of alkali metals. I. Calculated bands," Phys. Rev. 128, 82–97 (1962); "Energy bands ofalkali metals. II. Fermi surface," Phys. Rev. 128, 2524–2541 (1962).

1958 (1)

M. H. Cohen, "Optical constants, heat capacity and the Fermi surface," Philos. Mag. 3, 762–775 (1958).

1951 (1)

P. N. Butcher, "The absorption of light by alkali metals," Proc. Phys. Soc. London Ser. A 64, 765–772 (1951).

1947 (1)

C. S. Barrett, "A low temperature transformation inlithium," Phys. Rev. 72, 245–245 (1947).

Berreman, D. W.

D. W. Berreman, "Anomalous reststrahl structure from slight surface roughness," Phys. Rev. 163, 855–864 (1967); "Resonant reflectance anomalies: Effect of shapes of surfaces irregularities," Phys. Rev. B 1, 381–389 (1970); "Reflectance and ellipsometry when submicroscopic particles bestrew a surface," J. Opt. Soc. Am. 60, 499–505 (1970).

Animalu, A. O. E.

A. O. E. Animalu, "Optical conductivity of simple metals," Phys. Rev. 163, 557–562 (1967).

Arakawa, E. T.

T. Inagaki, L. C. Emerson, E. T. Arakawa, and M. W. Williams, "Optical properties of solid Na and Li between 0.6 and 3.8 eV," Phys. Rev. B 13, 2305–2313 (1976).

T. A. Callcott and E. T. Arakawa, "Ultraviolet optical properties of Li," J. Opt. Soc. Am. 64, 839–845 (1974).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Rb between 3.3 and 10.5 eV, " Phys. Rev. B 5, 2118–2124 (1972).

U. S. Whang, E. T. Arakawa and T. A. Callcott, "Optical properties of K between 4 and 10.7 eV and comparison, with Na, Rb, and Cs," Phys. Rev. B 6, 2109–2118 (1972).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Cs for photons of energy 3. 6–9. 6 eV, " J. Opt. Soc. Am. 61, 740–745 (1971).

Barrett, C. S.

C. S. Barrett, "A low temperature transformation inlithium," Phys. Rev. 72, 245–245 (1947).

Beaglehole, D.

D. Beaglehole and O. Hunderi, "Study of the interaction of light with rough metal surface. I. Experiment," Phys. Rev. B 2, 309–321 (1970); "Study of the interaction of light with rough metal surface. III. Theory," Phys. Rev. B 2, 321–329 (1970).

Bennet, B. I.

B. I. Bennet and S. H. Vosko, "Calculation of the interband optical conductivity of sodium and potassium," Phys. Rev. B 6, 2119–2131 (1972).

Bösenberg, J.

J. Bösenberg, "Bestimmung der optischen konstanten von lithium und natrium durch optisch angeregte oberflächenplasmaschwingungen, "Z. Phys. Chem. Abt. B 22, 261–271 (1975).

Boutry, G. A.

J. Monin and G. A. Boutry, "Optical and photoelectric properties of alkali metals," Phys. Rev. B 9, 1309–1327 (1974).

Butcher, P. N.

P. N. Butcher, "The absorption of light by alkali metals," Proc. Phys. Soc. London Ser. A 64, 765–772 (1951).

Callaway, J.

W. Y. Ching and J. Callaway, "Band structure, cohesive energy, optical conductivity, and compton profile of lithium," Phys. Rev. B 9, 5115–5121 (1974).

Callcott, T. A.

T. A. Callcott and E. T. Arakawa, "Ultraviolet optical properties of Li," J. Opt. Soc. Am. 64, 839–845 (1974).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Rb between 3.3 and 10.5 eV, " Phys. Rev. B 5, 2118–2124 (1972).

U. S. Whang, E. T. Arakawa and T. A. Callcott, "Optical properties of K between 4 and 10.7 eV and comparison, with Na, Rb, and Cs," Phys. Rev. B 6, 2109–2118 (1972).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Cs for photons of energy 3. 6–9. 6 eV, " J. Opt. Soc. Am. 61, 740–745 (1971).

Ching, W. Y.

W. Y. Ching and J. Callaway, "Band structure, cohesive energy, optical conductivity, and compton profile of lithium," Phys. Rev. B 9, 5115–5121 (1974).

Cohen, M. H.

M. H. Cohen, "Optical constants, heat capacity and the Fermi surface," Philos. Mag. 3, 762–775 (1958).

Emerson, L. C.

T. Inagaki, L. C. Emerson, E. T. Arakawa, and M. W. Williams, "Optical properties of solid Na and Li between 0.6 and 3.8 eV," Phys. Rev. B 13, 2305–2313 (1976).

Fraisse, R.

M. Rasigni, G. Rasigni, J. P. Gasparini, and R. Fraisse, "Structure and optical conductivity of thin lithium deposits prepared at 6 K," J. App. Phys. 47, 1757–1761 (1976).

M. Rasigni, J. P. Gasparini, G. Rasigni, and R. Fraisse, "Collective oscillations and interband absorption in granular deposits of lithium, prepared and studied at 6 K," Solid State Commun. 18, 629–631 (1976).

Gasparini, J. P.

M. Rasigni, J. P. Gasparini, G. Rasigni, and R. Fraisse, "Collective oscillations and interband absorption in granular deposits of lithium, prepared and studied at 6 K," Solid State Commun. 18, 629–631 (1976).

M. Rasigni, G. Rasigni, J. P. Gasparini, and R. Fraisse, "Structure and optical conductivity of thin lithium deposits prepared at 6 K," J. App. Phys. 47, 1757–1761 (1976).

Ham, F. S.

F. S. Ham, "Energy bands of alkali metals. I. Calculated bands," Phys. Rev. 128, 82–97 (1962); "Energy bands ofalkali metals. II. Fermi surface," Phys. Rev. 128, 2524–2541 (1962).

Hanyu, T.

S. Yamaguchi and T. Hanyu, "Optical properties of potassium, J. Phys. Soc. Japan 31, 1431–1441 (1971); "The optical properties of Rb," J. Phys. Soc. Japan 35, 1371–1377 (1973); "Optical properties of Cs," J. Phys. Soc. Japan 37, 994–999 (1974).

Hodgson, J. N.

J. N. Hodgson, "The optical properties and electronic band structure of lithium," in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abeles (NorthHolland, Amsterdam 1966) pp. 60–65.

Hunderi, O.

D. Beaglehole and O. Hunderi, "Study of the interaction of light with rough metal surface. I. Experiment," Phys. Rev. B 2, 309–321 (1970); "Study of the interaction of light with rough metal surface. III. Theory," Phys. Rev. B 2, 321–329 (1970).

Inagaki, T.

T. Inagaki, L. C. Emerson, E. T. Arakawa, and M. W. Williams, "Optical properties of solid Na and Li between 0.6 and 3.8 eV," Phys. Rev. B 13, 2305–2313 (1976).

Kunz, C.

C. Kunz, "Messung charakteristischer energieverluste von elektronenan leichtoxydierbaren metallen im ultrahochvakuum," Z. Phys. 196, 311–331 (1966).

Mathewson, A. G.

A. G. Mathewson and H. P. Myers, "Absolute values of the optical constants of some pure metals, " Phys. Scripta 4, 291–292 (1971); "The optical absorption spectrum of lithium metal in the range 0.5–4 eV, " Philos. Mag. 25, 853–863 (1972).

Monin, J.

J. Monin and G. A. Boutry, "Optical and photoelectric properties of alkali metals," Phys. Rev. B 9, 1309–1327 (1974).

Myers, H. P.

A. G. Mathewson and H. P. Myers, "Absolute values of the optical constants of some pure metals, " Phys. Scripta 4, 291–292 (1971); "The optical absorption spectrum of lithium metal in the range 0.5–4 eV, " Philos. Mag. 25, 853–863 (1972).

Palmari, J. P.

M. Rasigni, G. Rasigni, and J. P. Palmari, "Absorption interbande, absorption intrabande, oscillations collectives, dans les dépôts très minces de lithium étudiés sous ultra vide statique," Philos. Mag. 31, 1307–1325 (1975).

Perdew, J. P.

J. P. Perdew and S. H. Vosko, "Calculation of the band structure, form surface, and interband optical conductivity of lithium," J. Phys. F: Metal Phys. 4, 380–393 (1974).

Rasigni, G.

M. Rasigni and G. Rasigni, "The effects of interband, intraband and surface plasmon processes on the reflectivity of Li films," J. Opt. Soc. Am. 66, 826–830 (1976).

M. Rasigni, J. P. Gasparini, G. Rasigni, and R. Fraisse, "Collective oscillations and interband absorption in granular deposits of lithium, prepared and studied at 6 K," Solid State Commun. 18, 629–631 (1976).

M. Rasigni, G. Rasigni, J. P. Gasparini, and R. Fraisse, "Structure and optical conductivity of thin lithium deposits prepared at 6 K," J. App. Phys. 47, 1757–1761 (1976).

M. Rasigni, G. Rasigni, and J. P. Palmari, "Absorption interbande, absorption intrabande, oscillations collectives, dans les dépôts très minces de lithium étudiés sous ultra vide statique," Philos. Mag. 31, 1307–1325 (1975).

M. Rasigni and G. Rasigni, "Experimental study of the optical absorption and structure of very thin lithium deposits, " J. Opt. Soc. Am. 62, 1033–1036 (1972); "Anomalies of the optical properties of thin lithium layers and their relation to similar anomalies observed with other alkali metals," J. Opt. Soc. Am. 63, 775–785 (1973).

Rasigni, M.

M. Rasigni and G. Rasigni, "The effects of interband, intraband and surface plasmon processes on the reflectivity of Li films," J. Opt. Soc. Am. 66, 826–830 (1976).

M. Rasigni, J. P. Gasparini, G. Rasigni, and R. Fraisse, "Collective oscillations and interband absorption in granular deposits of lithium, prepared and studied at 6 K," Solid State Commun. 18, 629–631 (1976).

M. Rasigni, G. Rasigni, J. P. Gasparini, and R. Fraisse, "Structure and optical conductivity of thin lithium deposits prepared at 6 K," J. App. Phys. 47, 1757–1761 (1976).

M. Rasigni, G. Rasigni, and J. P. Palmari, "Absorption interbande, absorption intrabande, oscillations collectives, dans les dépôts très minces de lithium étudiés sous ultra vide statique," Philos. Mag. 31, 1307–1325 (1975).

M. Rasigni and G. Rasigni, "Experimental study of the optical absorption and structure of very thin lithium deposits, " J. Opt. Soc. Am. 62, 1033–1036 (1972); "Anomalies of the optical properties of thin lithium layers and their relation to similar anomalies observed with other alkali metals," J. Opt. Soc. Am. 63, 775–785 (1973).

Smith, N. V.

N. V. Smith, "Optical constants of rubidium and cesium from 0.5 to 4.0 eV," Phys. Rev. B 2, 2840–2848 (1970).

N. V. Smith, "Optical constants of sodium and potassium from 0.5 to 4.0 eV by split-beam ellipsometry," Phys. Rev. 183, 634–644 (1969).

Stern, F.

F. Stern, "Elementary theory of the optical properties of solids," in Solid State Physics, Vol. 15, edited by F. Seitz and D. Turnbull (Academic, New York, 1963), pp. 333–340.

Stevenson, D. J.

D. J. Stevenson, "Optical absorption in the alkali metals: Detailed calculations," Phys. Rev. B 7, 2348–2358 (1973).

Vosko, S. H.

J. P. Perdew and S. H. Vosko, "Calculation of the band structure, form surface, and interband optical conductivity of lithium," J. Phys. F: Metal Phys. 4, 380–393 (1974).

B. I. Bennet and S. H. Vosko, "Calculation of the interband optical conductivity of sodium and potassium," Phys. Rev. B 6, 2119–2131 (1972).

Whang, U. S.

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Rb between 3.3 and 10.5 eV, " Phys. Rev. B 5, 2118–2124 (1972).

U. S. Whang, E. T. Arakawa and T. A. Callcott, "Optical properties of K between 4 and 10.7 eV and comparison, with Na, Rb, and Cs," Phys. Rev. B 6, 2109–2118 (1972).

U. S. Whang, E. T. Arakawa, and T. A. Callcott, "Optical properties of Cs for photons of energy 3. 6–9. 6 eV, " J. Opt. Soc. Am. 61, 740–745 (1971).

Williams, M. W.

T. Inagaki, L. C. Emerson, E. T. Arakawa, and M. W. Williams, "Optical properties of solid Na and Li between 0.6 and 3.8 eV," Phys. Rev. B 13, 2305–2313 (1976).

Wilson, A. H.

A. H. Wilson, The theory of metals (Cambridge, New York, 1936), p. 133.

Wooten, F.

F. Wooten, Optical Properties of Solids, (Academic, New York, 1972) p. 249.

Yamaguchi, S.

S. Yamaguchi and T. Hanyu, "Optical properties of potassium, J. Phys. Soc. Japan 31, 1431–1441 (1971); "The optical properties of Rb," J. Phys. Soc. Japan 35, 1371–1377 (1973); "Optical properties of Cs," J. Phys. Soc. Japan 37, 994–999 (1974).

J. App. Phys. (1)

M. Rasigni, G. Rasigni, J. P. Gasparini, and R. Fraisse, "Structure and optical conductivity of thin lithium deposits prepared at 6 K," J. App. Phys. 47, 1757–1761 (1976).

J. Opt. Soc. Am. (4)

J. Phys. F: Metal Phys. (1)

J. P. Perdew and S. H. Vosko, "Calculation of the band structure, form surface, and interband optical conductivity of lithium," J. Phys. F: Metal Phys. 4, 380–393 (1974).

J. Phys. Soc. Japan (1)

S. Yamaguchi and T. Hanyu, "Optical properties of potassium, J. Phys. Soc. Japan 31, 1431–1441 (1971); "The optical properties of Rb," J. Phys. Soc. Japan 35, 1371–1377 (1973); "Optical properties of Cs," J. Phys. Soc. Japan 37, 994–999 (1974).

Philos. Mag. (2)

M. H. Cohen, "Optical constants, heat capacity and the Fermi surface," Philos. Mag. 3, 762–775 (1958).

M. Rasigni, G. Rasigni, and J. P. Palmari, "Absorption interbande, absorption intrabande, oscillations collectives, dans les dépôts très minces de lithium étudiés sous ultra vide statique," Philos. Mag. 31, 1307–1325 (1975).

Phys. Rev. (5)

F. S. Ham, "Energy bands of alkali metals. I. Calculated bands," Phys. Rev. 128, 82–97 (1962); "Energy bands ofalkali metals. II. Fermi surface," Phys. Rev. 128, 2524–2541 (1962).

A. O. E. Animalu, "Optical conductivity of simple metals," Phys. Rev. 163, 557–562 (1967).

C. S. Barrett, "A low temperature transformation inlithium," Phys. Rev. 72, 245–245 (1947).

N. V. Smith, "Optical constants of sodium and potassium from 0.5 to 4.0 eV by split-beam ellipsometry," Phys. Rev. 183, 634–644 (1969).

D. W. Berreman, "Anomalous reststrahl structure from slight surface roughness," Phys. Rev. 163, 855–864 (1967); "Resonant reflectance anomalies: Effect of shapes of surfaces irregularities," Phys. Rev. B 1, 381–389 (1970); "Reflectance and ellipsometry when submicroscopic particles bestrew a surface," J. Opt. Soc. Am. 60, 499–505 (1970).

Phys. Rev. B (9)

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N. V. Smith, "Optical constants of rubidium and cesium from 0.5 to 4.0 eV," Phys. Rev. B 2, 2840–2848 (1970).

B. I. Bennet and S. H. Vosko, "Calculation of the interband optical conductivity of sodium and potassium," Phys. Rev. B 6, 2119–2131 (1972).

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U. S. Whang, E. T. Arakawa and T. A. Callcott, "Optical properties of K between 4 and 10.7 eV and comparison, with Na, Rb, and Cs," Phys. Rev. B 6, 2109–2118 (1972).

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Phys. Scripta (1)

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Proc. Phys. Soc. London Ser. A (1)

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Other (5)

See, for instance, "Simple metals," in Optical Properties and Electronic Structure of Metals and Alloys, editedby F. Abeles (North-Holland, Amsterdam, 1966), pp. 1–94.

F. Stern, "Elementary theory of the optical properties of solids," in Solid State Physics, Vol. 15, edited by F. Seitz and D. Turnbull (Academic, New York, 1963), pp. 333–340.

F. Wooten, Optical Properties of Solids, (Academic, New York, 1972) p. 249.

J. N. Hodgson, "The optical properties and electronic band structure of lithium," in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abeles (NorthHolland, Amsterdam 1966) pp. 60–65.

A. H. Wilson, The theory of metals (Cambridge, New York, 1936), p. 133.

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