OCCURRENCE OF A BULK-LIKE ELECTRON PHASE IN THE CYCLOTRON-RESONANCE OF GAAS INVERSION CHANNELS IN THE EXTREME QUANTUM LIMIT

被引：6

作者：

ENGELHARDT, CM ^{[1
]}

GORNIK, E ^{[1
]}

BESSON, M ^{[1
]}

BOHM, G ^{[1
]}

WEIMANN, G ^{[1
]}

机构：

[1] VIENNA TECH UNIV,INST FESTKORPERFORSCH,A-1040 VIENNA,AUSTRIA

来源：

SURFACE SCIENCE | 1994年 / 305卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(94)90854-0

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：

Cyclotron resonance (CR) of 2D electron gases in GaAs has been systematically studied in the extreme quantum limit. Below a critical filling factor of about 1/9 a splitting is observed in the resonance line. For very low filling factors (approximately 1/20) the splitting becomes nearly identical to the bulk GaAs CR spin-splitting. At intermediate filling factors the behaviour of the splitting strongly differs from the expected single particle spin-splitting. Above the critical filling factor a single hybridized resonance is observed. The characteristics of the transition regime are investigated by a careful analysis of CR masses, carrier densities and scattering rates. Electron-electron interaction as well as localization effects are discussed in the interpretation of the observations.

引用

页码：23 / 32

页数：10

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