CONFINED LO PHONONS IN GAAS/ALAS SUPERLATTICES

被引：56

作者：

MOWBRAY, DJ

CARDONA, M

PLOOG, K

机构：

[1] Max-Planck-Institut F̈r Festkörperforschung, Heisenbergstrasse 1, D-7000 Stuttgart 80

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.43.1598

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the observation of both GaAs and AlAs confined LO phonons in short-period GaAs/AlAs superlattices. The measured GaAs mode frequencies are found to map well onto the bulk dispersion curve with a suitable choice of an effective wave vector, confirming the validity of this technique for determining bulk phonon dispersions over at least the first half of the bulk Brillouin zone. The frequency separation of confined AlAs LO modes is found to be consistent with a weak dispersion of this branch along the [001] direction, in agreement with recent lattice-dynamic calculations.

引用

页码：1598 / 1603

页数：6

共 26 条

[1] DOUBLY AND TRIPLY RESONANT RAMAN-SCATTERING BY LO PHONONS IN GAAS/ALAS SUPERLATTICES [J].

ALEXANDROU, A ;

CARDONA, M ;

PLOOG, K .

PHYSICAL REVIEW B, 1988, 38 (03) :2196-2199

[2] PHONON-SPECTRA OF ULTRATHIN GAAS/ALAS SUPERLATTICES - AN ABINITIO CALCULATION [J].

BARONI, S ;

GIANNOZZI, P ;

MOLINARI, E .

PHYSICAL REVIEW B, 1990, 41 (06) :3870-3873

[3] SPECTROSCOPIC STUDIES OF REAL SPACE INDIRECT SYMMETRIC GAAS/ALAS SHORT-PERIOD SUPERLATTICES [J].

CINGOLANI, R ;

PLOOG, K ;

BALDASSARRE, L ;

FERRARA, M ;

LUGARA, M ;

MORO, C .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1990, 50 (02) :189-196

[4] INTERFACE ROUGHNESS AND THE DISPERSION OF CONFINED LO PHONONS IN GAAS/ALAS QUANTUM WELLS [J].

FASOL, G ;

TANAKA, M ;

SAKAKI, H ;

HORIKOSHI, Y .

PHYSICAL REVIEW B, 1988, 38 (09) :6056-6065

[5] RAMAN-SCATTERING FROM (ALAS)M(GAAS)N ULTRATHIN-LAYER SUPERLATTICES [J].

ISHIBASHI, A ;

ITABASHI, M ;

MORI, Y ;

KANEKO, K ;

KAWADO, S ;

WATANABE, N .

PHYSICAL REVIEW B, 1986, 33 (04) :2887-2889

[6] RESONANCE RAMAN-SCATTERING BY CONFINED LO AND TO PHONONS IN GAAS-ALAS SUPERLATTICES - COMMENT [J].

JUSSERAND, B ;

PAQUET, D .

PHYSICAL REVIEW LETTERS, 1986, 56 (16) :1752-1752

[7]

JUSSERAND B, 1989, LIGHT SCATTERING SOL, V5

[8]

Molinari E., 1987, 18th International Conference on the Physics of Semiconductors, P663

[9] FUNDAMENTAL ENERGY GAPS OF ALAS AND ALP FROM PHOTOLUMINESCENCE EXCITATION-SPECTRA [J].

MONEMAR, B .

PHYSICAL REVIEW B, 1973, 8 (12) :5711-5718

[10]

Mowbray D. J., UNPUB

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