LATTICE-DYNAMICS AND RAMAN RESPONSE OF (113) GAAS/ALAS SUPERLATTICES

被引：25

作者：

CASTRILLO, P ^{[1
]}

COLOMBO, L ^{[1
]}

ARMELLES, G ^{[1
]}

机构：

[1] CSIC,CTR NACL MICROELECTR,E-28006 MADRID,SPAIN

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.49.10362

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a supercell model calculation of the vibrational properties and Raman response of (113)-oriented GaAs/AlAs superlattices. Phonon-dispersion relations are calculated both along the growth axis and in the normal planes. The angular dispersion of the zone-center optical phonons is calculated as well, and some unusual features are discussed. We also calculate the Raman response in the backscattering geometry: to this aim, the bond polarizability model has been suitably extended to the case of arbitrarily oriented superlattices. The effects of the interface cationic diffusion on the Raman spectra are discussed. A comparison with experimental data is finally presented and discussed.

引用

收藏

页码：10362 / 10372

页数：11

相关论文

共 27 条

[1] STUDY OF ZONE-FOLDING EFFECTS ON PHONONS IN ALTERNATING MONOLAYERS OF GAAS-ALAS [J].

BARKER, AS ;

MERZ, JL ;

GOSSARD, AC .

PHYSICAL REVIEW B, 1978, 17 (08) :3181-3196

[2] VIBRATIONAL PROPERTIES AND INFRARED-SPECTRA OF ALXGA1-XAS SYSTEMS .1. AVERAGE-T-MATRIX APPROXIMATION VERSUS SUPERCELL CALCULATION FOR HOMOGENEOUS ALLOYS [J].

BERNASCONI, M ;

COLOMBO, L ;

MIGLIO, L ;

BENEDEK, G .

PHYSICAL REVIEW B, 1991, 43 (18) :14447-14456

[3] VIBRATIONAL PROPERTIES AND INFRARED-SPECTRA OF ALXGA1-XAS SYSTEMS .2. ORDER AND DISORDER FEATURES IN SUPERLATTICE CONFIGURATION [J].

BERNASCONI, M ;

COLOMBO, L ;

MIGLIO, L .

PHYSICAL REVIEW B, 1991, 43 (18) :14457-14464

[4] ATOMIC LAYER MOLECULAR-BEAM EPITAXY (ALMBE) OF III-V COMPOUNDS - GROWTH MODES AND APPLICATIONS [J].

BRIONES, F ;

GONZALEZ, L ;

RUIZ, A .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1989, 49 (06) :729-737

[5]

CARDONA M, 1989, LIGHT SCATTERING SOL, V2, P67

[6] RAMAN RESPONSE OF GAAS/ALAS SUPERLATTICES WITH ALXGA1-XAS INTRALAYERS [J].

COLOMBO, L ;

MOLTENI, C ;

MIGLIO, L .

SUPERLATTICES AND MICROSTRUCTURES, 1992, 12 (04) :523-525

[7]

DOMINGUEZ PS, COMMUNICATION

[8] ABINITIO CALCULATION OF PHONON DISPERSIONS IN SEMICONDUCTORS [J].

GIANNOZZI, P ;

DE GIRONCOLI, S ;

PAVONE, P ;

BARONI, S .

PHYSICAL REVIEW B, 1991, 43 (09) :7231-7242

[9] RAMAN-SCATTERING CHARACTERIZATION OF INTERFACE BROADENING IN GAAS/ALAS SHORT-PERIOD SUPERLATTICES GROWN BY MOLECULAR-BEAM EPITAXY [J].

JUSSERAND, B ;

ALEXANDRE, F ;

PAQUET, D ;

LEROUX, G .

APPLIED PHYSICS LETTERS, 1985, 47 (03) :301-303

[10]

JUSSERAND B, 1989, LIGHT SCATTERING SOL, V5