COUPLED-MODE HOT-ELECTRON RELAXATION AND THE HOT-PHONON EFFECT IN POLAR SEMICONDUCTORS

被引：12

作者：

DHARMAWARDANA, MWC

机构：

[1] National Research Council of Canada, Ottawa

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 86卷 / 02期

关键词：

D O I：

10.1016/0038-1098(93)90926-E

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Electron-density fluctuations and LO-phonons in polar semiconductors form coupled modes(CM). The relaxation of hot carriers occur via these coupled modes. A derivation of the key formulae for the energy loss rate of hot electrons relaxing via LO-phonon emission with coupled-mode formation is presented. Previous results[3] are recovered; and new microscopic formulae for the relaxation of coupled-mode-LO-phonons to acoustic- phonons are also given. The extended formulae given here are needed to treat hot-phonon effects and agree well with available experimental data.

引用

页码：83 / 86

页数：4

共 24 条

[1] NONEQUILIBRIUM PHONON EFFECT ON TIME-DEPENDENT RELAXATION OF HOT-ELECTRONS IN SEMICONDUCTOR HETEROJUNCTIONS [J].

CAI, W ;

MARCHETTI, MC ;

LAX, M .

PHYSICAL REVIEW B, 1987, 35 (03) :1369-1372

[2] DYNAMICAL SCREENING IN THE COOLING THEORY OF HIGH-DENSITY ELECTRON-HOLE PLASMAS [J].

COLLET, JH .

PHYSICAL REVIEW B, 1989, 39 (11) :7659-7665

[3] MANY-BODY THEORY OF ENERGY RELAXATION IN AN EXCITED-ELECTRON GAS VIA OPTICAL-PHONON EMISSION [J].

DASSARMA, S ;

JAIN, JK ;

JALABERT, R .

PHYSICAL REVIEW B, 1990, 41 (06) :3561-3571

[4] NATURE OF COUPLED-MODE CONTRIBUTIONS TO HOT-ELECTRON RELAXATION IN SEMICONDUCTORS - COMMENT [J].

DASSARMA, S ;

KORENMAN, V .

PHYSICAL REVIEW LETTERS, 1991, 67 (20) :2916-2916

[5] NATURE OF COUPLED-MODE CONTRIBUTIONS TO HOT-ELECTRON RELAXATION IN SEMICONDUCTORS [J].

DHARMAWARDANA, MWC .

PHYSICAL REVIEW LETTERS, 1991, 66 (02) :197-200

[6] NATURE OF COUPLED-MODE CONTRIBUTIONS TO HOT-ELECTRON RELAXATION IN SEMICONDUCTORS - REPLY [J].

DHARMAWARDANA, MWC .

PHYSICAL REVIEW LETTERS, 1991, 67 (20) :2917-2917

[7]

GOODNICK SM, 1987, PHYS REV LETT, V59, P716

[8]

JAIN JK, 1988, PHYS REV LETT, V61, P2005, DOI 10.1103/PhysRevLett.61.2005.2

[9] MANY-BODY EFFECTS IN A NONEQUILIBRIUM ELECTRON-LATTICE SYSTEM - COUPLING OF QUASIPARTICLE EXCITATIONS AND LO PHONONS [J].

JAIN, JK ;

JALABERT, R ;

DASSARMA, S .

PHYSICAL REVIEW LETTERS, 1988, 60 (04) :353-356

[10] PICOSECOND RAMAN STUDIES OF THE FROHLICH INTERACTION IN SEMICONDUCTOR ALLOYS [J].

KASH, JA ;

JHA, SS ;

TSANG, JC .

PHYSICAL REVIEW LETTERS, 1987, 58 (18) :1869-1872

← 1 2 3 →