TEMPERATURE-DEPENDENT INFLUENCE OF IONIZED-IMPURITY SCATTERING ON THE CYCLOTRON-RESONANCE LINEWIDTH OF ALXGA1-XAS/GAAS HETEROSTRUCTURES

被引：7

作者：

DREXLER, H ^{[1
]}

GRAF, P ^{[1
]}

BESSON, M ^{[1
]}

GORNIK, E ^{[1
]}

WEIMANN, G ^{[1
]}

LASSNIG, R ^{[1
]}

机构：

[1] UNIV INNSBRUCK,INST EXPTL PHYS,A-6020 INNSBRUCK,AUSTRIA

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.44.3105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cyclotron-resonance transmission experiments were performed on an Al(x)Ga(1-x)As/GaAs heterostructure and compared with self-consistent calculations of the dynamical conductivity of the two-dimensional electron gas (2D EG). It is found that the dominant scatterers for filling factor-nu < 2 are the ionized impurities in the vicinity range of the 2D EG. A sharp step accompanied by a strong decrease of linewidth for nu less-than-or-equal-to 1 was observed for T = 1.2 K and is attributed to an inhomogeneous distribution of the electrons over the sample. This is modeled in the calculations by an effective density of scatterers. The temperature-dependent measurements are explained with the basic assumption of a spatial separation between repulsive scatterers and the electrons.

引用

页码：3105 / 3109

页数：5

共 24 条

[1] THEORY OF OSCILLATORY G-FACTOR IN AN MOS INVERSION LAYER UNDER STRONG MAGNETIC-FIELDS [J].

ANDO, T ;

UEMURA, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1974, 37 (04) :1044-1052

[2] LANDAU-LEVEL BROADENING IN GAAS/ALGAAS HETEROJUNCTIONS [J].

ANDO, T ;

MURAYAMA, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1985, 54 (04) :1519-1527

[3] THEORY OF CYCLOTRON-RESONANCE LINESHAPE IN A 2-DIMENSIONAL ELECTRON-SYSTEM [J].

ANDO, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1975, 38 (04) :989-997

[4] FILLING-FACTOR-DEPENDENT CYCLOTRON MASS IN SPACE-CHARGE LAYERS ON GAAS [J].

BATKE, E ;

STORMER, HL ;

GOSSARD, AC ;

ENGLISH, JH .

PHYSICAL REVIEW B, 1988, 37 (06) :3093-3096

[5]

CHUI KW, 1976, SURF SCI, V58, P182

[6] TWO-DIMENSIONAL LEVEL BROADENING IN THE EXTREME QUANTUM LIMIT [J].

DASSARMA, S .

PHYSICAL REVIEW B, 1981, 23 (09) :4592-4596

[7] OBSERVATION OF OSCILLATORY LINEWIDTH IN THE CYCLOTRON-RESONANCE OF GAAS-ALXGA1-XAS HETEROSTRUCTURES [J].

ENGLERT, T ;

MAAN, JC ;

UIHLEIN, C ;

TSUI, DC ;

GOSSARD, AC .

SOLID STATE COMMUNICATIONS, 1983, 46 (07) :545-548

[8] G-FACTOR ENHANCEMENT IN THE 2D ELECTRON-GAS IN GAAS/ALGAAS HETEROJUNCTIONS [J].

ENGLERT, T ;

TSUI, DC ;

GOSSARD, AC ;

UIHLEIN, C .

SURFACE SCIENCE, 1982, 113 (1-3) :295-300

[9] DETERMINATION OF SUBBAND STRUCTURE, DEPOLARIZATION SHIFT, AND DEPLETION CHARGE IN AN ALXGA1-XAS-GAAS HETEROSTRUCTURE [J].

ENSSLIN, K ;

HEITMANN, D ;

PLOOG, K .

PHYSICAL REVIEW B, 1989, 39 (15) :10879-10886

[10] CYCLOTRON-RESONANCE OSCILLATIONS IN INAS QUANTUM-WELLS [J].

HEITMANN, D ;

ZIESMANN, M ;

CHANG, LL .

PHYSICAL REVIEW B, 1986, 34 (10) :7463-7466

← 1 2 3 →