SCREENING EFFECTS IN THE CYCLOTRON-RESONANCE OF 2D-ELECTRONS IN GAAS/ALGAAS HETEROSTRUCTURES AND SINGLE QUANTUM-WELLS

被引：7

作者：

BESSON, M

GORNIK, E

BOHM, G

WEIMANN, G

机构：

[1] Walter Schottky Institut: TU München. Am Coulombwall

来源：

SURFACE SCIENCE | 1992年 / 263卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(92)90428-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The cyclotron resonance of the 2DEG in high-mobility GaAs/AlGaAs structures has been studied systematically in the integer and fractional quantum Hall regime. GaAs/AlGaAs heterostructures show maxima in CR line-width and anomalies in CR mass at fractional filling factors of 4/3, 2/3 and 3/5 at temperatures of 0.4 K which disappear at higher temperatures. Narrow GaAs/AlGaAs single quantum wells (SQW) (mu = 250 000 cm2/(V s)) have also been investigated. Due to the specially designed band structure an additional but separated inversion channel with charge density less than 5 x 10(10) cm-2 and high mobility is present in these samples. Novel CR-phenomena are observed.

引用

页码：650 / 653

页数：4

共 18 条

[1] INFRARED MAGNETO-TRANSMITTANCE OF A 2-DIMENSIONAL ELECTRON-GAS [J].

CHIU, KW ;

LEE, TK ;

QUINN, JJ .

SURFACE SCIENCE, 1976, 58 (01) :182-184

[2]

DREXLER H, UNPUB PHYS REV B

[3] 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

[4] STATISTICS OF QUASIPARTICLES AND THE HIERARCHY OF FRACTIONAL QUANTIZED HALL STATES [J].

HALPERIN, BI .

PHYSICAL REVIEW LETTERS, 1984, 52 (18) :1583-1586

[5] MANY-BODY EFFECTS ON THE CYCLOTRON-RESONANCE IN A TWO-DIMENSIONAL ELECTRON-GAS [J].

KALLIN, C ;

HALPERIN, BI .

PHYSICAL REVIEW B, 1985, 31 (06) :3635-3647

[6] CYCLOTRON RESONANCE AND DE HAAS-VAN ALPHEN OSCILLATIONS OF AN INTERACTING ELECTRON GAS [J].

KOHN, W .

PHYSICAL REVIEW, 1961, 123 (04) :1242-&

[7] CALCULATION OF THE CYCLOTRON-RESONANCE LINEWIDTH IN GAAS-ALGAAS HETEROSTRUCTURES [J].

LASSNIG, R ;

GORNIK, E .

SOLID STATE COMMUNICATIONS, 1983, 47 (12) :959-963

[8] MAGNETOPLASMON EXCITATIONS FROM PARTIALLY FILLED LANDAU-LEVELS IN 2 DIMENSIONS [J].

MACDONALD, AH ;

OJI, HCA ;

GIRVIN, SM .

PHYSICAL REVIEW LETTERS, 1985, 55 (20) :2208-2211

[9]

NICHOLAS RJ, 1988, HIGH MAGNETIC FIELDS, V2, P115

[10] ANOMALOUS CYCLOTRON RESONANCE LINEWIDTH IN HETEROJUNCTIONS DISPLAYING THE FRACTIONAL QUANTUM HALL-EFFECT [J].

RIKKEN, GLJA ;

MYRON, HW ;

WYDER, P ;

WEIMANN, G ;

SCHLAPP, W ;

HORSTMAN, RE ;

WOLTER, J .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1985, 18 (08) :L175-L179

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