AMPLIFICATION OF ACOUSTIC-WAVES DUE TO AN EXTERNAL TEMPERATURE-GRADIENT IN SUPERLATTICES

被引：5
|
作者：
MENSAH, SY
KANGAH, GK
机构：
[1] Dept. of Phys., Cape Coast Univ.
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1991年 / 3卷 / 22期
关键词：
D O I：
10.1088/0953-8984/3/22/020
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Amplification of short-wave sound propagating along the axis of a semiconductor superlattice by electrons of the lowest miniband in an external temperature gradient is investigated theoretically. The mechanism of absorption of phonons is due to Landau damping. Unlike a homogeneous material, the threshold field at which absorption turns over to amplification depends on the superlattice parameters and the wavelength of the sound wave.
引用
收藏
页码：4105 / 4107
页数：3
相关论文
共 50 条
  • [41] TEMPERATURE CHARACTERISTICS OF SURFACE ACOUSTIC-WAVES IN ISOTROPIC MATERIALS
    ANISIMKIN, VI
    SOVIET PHYSICS ACOUSTICS-USSR, 1981, 27 (06): : 453 - 454
  • [42] INDUCED MOLECULAR-TRANSPORT DUE TO SURFACE ACOUSTIC-WAVES
    TERRY, P
    STRANDBERG, MWP
    JOURNAL OF APPLIED PHYSICS, 1981, 52 (06) : 4281 - 4287
  • [43] ENHANCEMENT OF ABSORPTION-COEFFICIENT OF ACOUSTIC-WAVES DUE TO ACOUSTIC STREAMING IN FLUIDS
    MATHUR, SS
    ASERI, BL
    ACUSTICA, 1977, 38 (05): : 333 - 335
  • [44] BIDIRECTIONAL AMPLIFICATION OF ACOUSTIC-WAVES BY VARIABLE DRIFT OF THE CHARGE-CARRIERS
    ERMOLAEVA, IV
    CHERNOZATONSKII, LA
    ZHURNAL TEKHNICHESKOI FIZIKI, 1981, 51 (06): : 1313 - 1315
  • [45] Acoustic Phonon Growth Rate In Undoped Graphene Due To External Temperature Gradient
    Nafees, Subhana
    Ansari, Meenhaz
    Ashraf, Ssz
    DAE SOLID STATE PHYSICS SYMPOSIUM 2019, 2020, 2265
  • [46] PARAMETRIC AMPLIFICATION AND GENERATION OF SURFACE ACOUSTIC-WAVES ON A MONOLITHIC MIS STRUCTURE
    MINAGAWA, S
    KUGAYA, T
    TSUBOUCHI, K
    MIKOSHIBA, N
    APPLIED PHYSICS LETTERS, 1978, 33 (08) : 687 - 689
  • [47] STUDY OF TOROIDAL ION TEMPERATURE-GRADIENT ELECTROSTATIC DRIFT WAVES
    SHUKLA, PK
    PHYSICA SCRIPTA, 1990, 42 (06): : 725 - 731
  • [48] TRAVELING WAVES IN A FLUID LAYER SUBJECTED TO A HORIZONTAL TEMPERATURE-GRADIENT
    DAVIAUD, F
    VINCE, JM
    PHYSICAL REVIEW E, 1993, 48 (06): : 4432 - 4436
  • [49] PORE MOVEMENT IN KCL DUE TO A TEMPERATURE-GRADIENT - EVAPORATION MECHANISMS
    LEMAIRE, PJ
    BOWEN, HK
    AMERICAN CERAMIC SOCIETY BULLETIN, 1980, 59 (03): : 356 - 356
  • [50] TRANSPORT DUE TO ION TEMPERATURE-GRADIENT MODE VORTEX TURBULENCE
    PAVLENKO, VP
    WEILAND, J
    PHYSICA SCRIPTA, 1993, 47 (01): : 96 - 98
12345