Optical phonon frequencies and damping in AlAs, GaP, GaAs, InP, InAs and InSb studied by oblique incidence infrared spectroscopy

被引：98

作者：

Lockwood, DJ ^{[1
]}

Yu, GL ^{[1
]}

Rowell, NL ^{[1
]}

机构：

[1] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 136卷 / 07期

关键词：

semiconductors; phonons; light reflection;

D O I：

10.1016/j.ssc.2005.08.030

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The transverse (TO) and longitudinal (LO) optical phonons in AlAs, GaP, GaAs, InP, InAs and InSb have been measured at room temperature by infrared spectroscopy using an oblique incidence reflectance method. The spectra obtained were then fitted using a novel approach to determine the TO and LO phonon frequencies and damping. The results obtained are found to be more precise than in earlier reflectivity measurements using near-normal angles of incidence and provide information on the damping of both phonons. Apart from the GaAs LO mode, the observed damping parameters are found to be quite different from those predicted by theory. From these results the Lowndes condition governing the relative magnitudes of the TO and LO phonon line widths is found to be violated for all these zincblende semiconductors. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：404 / 409

页数：6

共 17 条

[1] Born M., 1975, PRINCIPLES OPTICS, Vfifth, P628
[2] BURNS G, 1985, SOLID STATE PHYS, P458
[3] Phonon linewidth in III-V semiconductors from density-functional perturbation theory
Debernardi, A
[J]. PHYSICAL REVIEW B, 1998, 57 (20) : 12847 - 12858
[4] REFRACTIVE INDEX OF ALAS
FERN, RE
ONTON, A
[J]. JOURNAL OF APPLIED PHYSICS, 1971, 42 (09) : 3499 - &
[5] ANHARMONICITY IN SEVERAL-POLAR-MODE CRYSTALS - ADJUSTING PHONON SELF-ENERGY OF LO AND TO MODES IN AL2O3 AND TIO2 TO FIT INFRARED REFLECTIVITY
GERVAIS, F
PIRIOU, B
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1974, 7 (13): : 2374 - 2386
[6] Free-carrier and phonon properties of n- and p-type hexagonal GaN films measured by infrared ellipsometry
Kasic, A
Schubert, M
Einfeldt, S
Hommel, D
Tiwald, TE
[J]. PHYSICAL REVIEW B, 2000, 62 (11) : 7365 - 7377
[7] INFLUENCE OF LATTICE ANHARMONICITY ON LONGITUDINAL OPTIC MODES OF CUBIC IONIC SOLIDS
LOWNDES, RP
[J]. PHYSICAL REVIEW B-SOLID STATE, 1970, 1 (06): : 2754 - +
[8] ABSORPTION AND DISPERSION OF INDIUM ANTIMONIDE
MOSS, TS
SMITH, SD
HAWKINS, TDF
[J]. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1957, 70 (08): : 776 - 784
[9] Palik ED, 1985, HDB OPTICAL CONSTANT, VII
[10] Palik ED, 1985, HDB OPTICAL CONSTANT, VI, DOI DOI 10.1016/B978-012544415-6.500002-9

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