Abstract

White and Straley have reported room-temperature optical constants, a, K, and ε<sub>2</sub>, for AgCl that exhibit negative, unphysical dips at the band edge. Because Morrison also obtained such behavior for InAs, InSb, and GaAs, we have studied possible sources of this anomaly. An artifact of the experimental reflectance data near this energy is found to be responsible. No defect in the Kramers—Kronig transform or its use is implied, contrary to some suggestions. The corrected optical constants of AgCl were modified by ~10% up to 5 eV, whereas at higher energies they were barely affected. Thus Kramers-Kronig-deduced optical constants that exhibit unusual structure are not affected by this structure at other energies. The new AgCl results are presented, and assignments are briefly discussed.

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  1. J. J. White, III and J. W. Straley, J. Opt. Soc. Am. 58, 759 (1968).
  2. R. E. Morrison, Phys. Rev. 124, 1314 (1961).
  3. R. S. Bauer, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970), pp. 39–43, 245–253, 273–277 (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–19646).
  4. E. L. Kreiger, D. J. Olechna, and D. S. Story, G. E. Technical Information Series No. 63-RL-3458G (1963).
  5. T. S. Moss, Optical Properties of Semiconductors (Butterworths, London, 1959), Ch. 2 and App. B.
  6. J. J. White, III, Ph.D. dissertation (Univ. of North Carolina, Chapel Hill, N. C., 1965), pp. 12–22, 89–106 (Xerox University Microfilms, Ann Arbor, Mich., Order No. 65–14 402).
  7. J. J. White, III, J. Opt. Soc. Am. 62, 212 (1972).
  8. The Stanford program for the Kramers–Kronig integral was written in Algol 60 by J. L. Shay, based on Ref. 4 and translated into FORTRAN IV by D. H. Seib. For this work, it was modified to obtain the high-energy extrapolation that gives a least-squares-fit to experiment at low energies.
  9. T. M. Donovan, W. E. Spicer, J. M. Bennett, and E. J. Ashley, Phys. Rev. B 2, 397 (1970); T. M. Donovan, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970) (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–12 887).
  10. P. O. Nilsson and L. Munkby, Phys. Kondens. Matrie 10, 290 (1969).
  11. P. L. Hartman and R. C. Merrill, J. Opt. Soc. Am. 51, 168 (1961).
  12. F. Moser and F. Urbach, Phys. Rev. 102, 1519 (1956).
  13. Y. Okamoto, Nachr. Akad. Wiss. Gottingen Math. Physik. KL. IIa, 14, 275 (1956); P. D. Millman, Masters dissertation (Cornell University, 1953) and cited references; and P. G. Aline, Phys. Rev. 105, 406 (1957).
  14. N. J. Carrera and F. C. Brown, Phys. Rev. B 4, 3651 (1971).
  15. P. M. Scop, Phys. Rev. 139, A934 (1965).
  16. F. Bassani, R. S. Knox, and W. B. Fowler, Phys. Rev. 137, A1217 (1965).
  17. O.Aita, I. Nagakura, and T. Sagawa, J. Phys. Soc. Jap. 30, 1414 (1971); S. Sato, M. Watanabe, Y. Iguchi, S. Nakai, Y. Nakamura, and T. Sagawa, J. Phys. Soc. Jap. 33, 1638 (1972).
  18. W. B. Fowler, Phys. Stat. Sol. B 52, 591 (1972).
  19. R. K. Ahrenkiel, J. Opt. Soc. Am. 61, 1651 (1971).
  20. D. L. Decker and J. L. Stanford, J. Opt. Soc. Am. 61, 679 (1971).
  21. H. Schröter, Z. Phys. 67, 24 (1931).

Okamoto, Y.

Y. Okamoto, Nachr. Akad. Wiss. Gottingen Math. Physik. KL. IIa, 14, 275 (1956); P. D. Millman, Masters dissertation (Cornell University, 1953) and cited references; and P. G. Aline, Phys. Rev. 105, 406 (1957).

Ahrenkiel, R. K.

R. K. Ahrenkiel, J. Opt. Soc. Am. 61, 1651 (1971).

Aita, O.

O.Aita, I. Nagakura, and T. Sagawa, J. Phys. Soc. Jap. 30, 1414 (1971); S. Sato, M. Watanabe, Y. Iguchi, S. Nakai, Y. Nakamura, and T. Sagawa, J. Phys. Soc. Jap. 33, 1638 (1972).

Ashley, E. J.

T. M. Donovan, W. E. Spicer, J. M. Bennett, and E. J. Ashley, Phys. Rev. B 2, 397 (1970); T. M. Donovan, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970) (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–12 887).

Bassani, F.

F. Bassani, R. S. Knox, and W. B. Fowler, Phys. Rev. 137, A1217 (1965).

Bauer, R. S.

R. S. Bauer, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970), pp. 39–43, 245–253, 273–277 (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–19646).

Bennett, J. M.

T. M. Donovan, W. E. Spicer, J. M. Bennett, and E. J. Ashley, Phys. Rev. B 2, 397 (1970); T. M. Donovan, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970) (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–12 887).

Brown, F. C.

N. J. Carrera and F. C. Brown, Phys. Rev. B 4, 3651 (1971).

Carrera, N. J.

N. J. Carrera and F. C. Brown, Phys. Rev. B 4, 3651 (1971).

Decker, D. L.

D. L. Decker and J. L. Stanford, J. Opt. Soc. Am. 61, 679 (1971).

Donovan, T. M.

T. M. Donovan, W. E. Spicer, J. M. Bennett, and E. J. Ashley, Phys. Rev. B 2, 397 (1970); T. M. Donovan, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970) (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–12 887).

Fowler, W. B.

F. Bassani, R. S. Knox, and W. B. Fowler, Phys. Rev. 137, A1217 (1965).

W. B. Fowler, Phys. Stat. Sol. B 52, 591 (1972).

Hartman, P. L.

P. L. Hartman and R. C. Merrill, J. Opt. Soc. Am. 51, 168 (1961).

Knox, R. S.

F. Bassani, R. S. Knox, and W. B. Fowler, Phys. Rev. 137, A1217 (1965).

Kreiger, E. L.

E. L. Kreiger, D. J. Olechna, and D. S. Story, G. E. Technical Information Series No. 63-RL-3458G (1963).

Merrill, R. C.

P. L. Hartman and R. C. Merrill, J. Opt. Soc. Am. 51, 168 (1961).

Morrison, R. E.

R. E. Morrison, Phys. Rev. 124, 1314 (1961).

Moser, F.

F. Moser and F. Urbach, Phys. Rev. 102, 1519 (1956).

Moss, T. S.

T. S. Moss, Optical Properties of Semiconductors (Butterworths, London, 1959), Ch. 2 and App. B.

Munkby, L.

P. O. Nilsson and L. Munkby, Phys. Kondens. Matrie 10, 290 (1969).

Nagakura, I.

O.Aita, I. Nagakura, and T. Sagawa, J. Phys. Soc. Jap. 30, 1414 (1971); S. Sato, M. Watanabe, Y. Iguchi, S. Nakai, Y. Nakamura, and T. Sagawa, J. Phys. Soc. Jap. 33, 1638 (1972).

Nilsson, P. O.

P. O. Nilsson and L. Munkby, Phys. Kondens. Matrie 10, 290 (1969).

Olechna, D. J.

E. L. Kreiger, D. J. Olechna, and D. S. Story, G. E. Technical Information Series No. 63-RL-3458G (1963).

Sagawa, T.

O.Aita, I. Nagakura, and T. Sagawa, J. Phys. Soc. Jap. 30, 1414 (1971); S. Sato, M. Watanabe, Y. Iguchi, S. Nakai, Y. Nakamura, and T. Sagawa, J. Phys. Soc. Jap. 33, 1638 (1972).

Schröter, H.

H. Schröter, Z. Phys. 67, 24 (1931).

Scop, P. M.

P. M. Scop, Phys. Rev. 139, A934 (1965).

Spicer, W. E.

T. M. Donovan, W. E. Spicer, J. M. Bennett, and E. J. Ashley, Phys. Rev. B 2, 397 (1970); T. M. Donovan, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970) (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–12 887).

Stanford, J. L.

D. L. Decker and J. L. Stanford, J. Opt. Soc. Am. 61, 679 (1971).

Story, D. S.

E. L. Kreiger, D. J. Olechna, and D. S. Story, G. E. Technical Information Series No. 63-RL-3458G (1963).

Straley, J. W.

J. J. White, III and J. W. Straley, J. Opt. Soc. Am. 58, 759 (1968).

Urbach, F.

F. Moser and F. Urbach, Phys. Rev. 102, 1519 (1956).

White, III, J. J.

J. J. White, III, Ph.D. dissertation (Univ. of North Carolina, Chapel Hill, N. C., 1965), pp. 12–22, 89–106 (Xerox University Microfilms, Ann Arbor, Mich., Order No. 65–14 402).

J. J. White, III and J. W. Straley, J. Opt. Soc. Am. 58, 759 (1968).

J. J. White, III, J. Opt. Soc. Am. 62, 212 (1972).

Other (21)

J. J. White, III and J. W. Straley, J. Opt. Soc. Am. 58, 759 (1968).

R. E. Morrison, Phys. Rev. 124, 1314 (1961).

R. S. Bauer, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970), pp. 39–43, 245–253, 273–277 (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–19646).

E. L. Kreiger, D. J. Olechna, and D. S. Story, G. E. Technical Information Series No. 63-RL-3458G (1963).

T. S. Moss, Optical Properties of Semiconductors (Butterworths, London, 1959), Ch. 2 and App. B.

J. J. White, III, Ph.D. dissertation (Univ. of North Carolina, Chapel Hill, N. C., 1965), pp. 12–22, 89–106 (Xerox University Microfilms, Ann Arbor, Mich., Order No. 65–14 402).

J. J. White, III, J. Opt. Soc. Am. 62, 212 (1972).

The Stanford program for the Kramers–Kronig integral was written in Algol 60 by J. L. Shay, based on Ref. 4 and translated into FORTRAN IV by D. H. Seib. For this work, it was modified to obtain the high-energy extrapolation that gives a least-squares-fit to experiment at low energies.

T. M. Donovan, W. E. Spicer, J. M. Bennett, and E. J. Ashley, Phys. Rev. B 2, 397 (1970); T. M. Donovan, Ph.D. dissertation (Stanford Univ., Stanford, Calif., 1970) (Xerox University Microfilms, Ann Arbor, Mich., Order No. 71–12 887).

P. O. Nilsson and L. Munkby, Phys. Kondens. Matrie 10, 290 (1969).

P. L. Hartman and R. C. Merrill, J. Opt. Soc. Am. 51, 168 (1961).

F. Moser and F. Urbach, Phys. Rev. 102, 1519 (1956).

Y. Okamoto, Nachr. Akad. Wiss. Gottingen Math. Physik. KL. IIa, 14, 275 (1956); P. D. Millman, Masters dissertation (Cornell University, 1953) and cited references; and P. G. Aline, Phys. Rev. 105, 406 (1957).

N. J. Carrera and F. C. Brown, Phys. Rev. B 4, 3651 (1971).

P. M. Scop, Phys. Rev. 139, A934 (1965).

F. Bassani, R. S. Knox, and W. B. Fowler, Phys. Rev. 137, A1217 (1965).

O.Aita, I. Nagakura, and T. Sagawa, J. Phys. Soc. Jap. 30, 1414 (1971); S. Sato, M. Watanabe, Y. Iguchi, S. Nakai, Y. Nakamura, and T. Sagawa, J. Phys. Soc. Jap. 33, 1638 (1972).

W. B. Fowler, Phys. Stat. Sol. B 52, 591 (1972).

R. K. Ahrenkiel, J. Opt. Soc. Am. 61, 1651 (1971).

D. L. Decker and J. L. Stanford, J. Opt. Soc. Am. 61, 679 (1971).

H. Schröter, Z. Phys. 67, 24 (1931).

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