Composite Fermions with a Warped Fermi Contour

被引：21

作者：

Mueed, M. A. ^{[1
]}

Kamburov, D. ^{[1
]}

Liu, Yang ^{[1
]}

Shayegan, M. ^{[1
]}

Pfeiffer, L. N. ^{[1
]}

West, K. W. ^{[1
]}

Baldwin, K. W. ^{[1
]}

Winkler, R. ^{[2
,3
]}

机构：

[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[2] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

[3] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 17期

基金：

美国国家科学基金会;

关键词：

2-DIMENSIONAL ELECTRON-GAS; SURFACE ACOUSTIC-WAVES; MAGNETORESISTANCE OSCILLATIONS; MAGNETIC-FIELD; LANDAU-LEVEL; TRANSPORT; SUPERLATTICES; POTENTIALS; MODULATION; ANISOTROPY;

D O I：

10.1103/PhysRevLett.114.176805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Via measurements of commensurability features near the Landau filling factor nu = 1/2, we probe the shape of the Fermi contour for hole-flux composite fermions confined to a wide GaAs quantum well. The data reveal that the composite fermions are strongly influenced by the characteristics of the Landau level in which they are formed. In particular, their Fermi contour is warped when their Landau level originates from a hole band with significant warping.

引用

页数：5

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