Weak-localization-like temperature-dependent conductivity of a dilute two-dimensional hole gas in a parallel magnetic field

被引：30

作者：

Gao, XPA ^{[1
]}

Mills, AP

Ramirez, AP

Pfeiffer, LN

West, KW

机构：

[1] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[2] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[4] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.89.016801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the magnetotransport properties of a high mobility two-dimensional hole gas (2DHG) in a 10 nm GaAs quantum well with densities in the range of (0.7-1.6)x10(10) cm (-2) on the metallic side of the zero-field "metal-insulator transition." In a parallel field well above B-c that suppresses the metallic conductivity, the 2DHG exhibits a conductivity Deltag(T)approximate to(1/pi) (e(2)/h)lnT reminiscent of weak localization for Fermi liquids. The experiments are consistent with the coexistence of two phases in our system: a metallic phase and a weakly insulating Fermi liquid phase.

引用

页码：168011 / 168014

页数：4

共 27 条

[1] Colloquium:: Metallic behavior and related phenomena in two dimensions [J].

Abrahams, E ;

Kravchenko, SV ;

Sarachik, MP .

REVIEWS OF MODERN PHYSICS, 2001, 73 (02) :251-266

[2] MAGNETORESISTANCE AND HALL-EFFECT IN A DISORDERED 2-DIMENSIONAL ELECTRON-GAS [J].

ALTSHULER, BL ;

KHMELNITZKII, D ;

LARKIN, AI ;

LEE, PA .

PHYSICAL REVIEW B, 1980, 22 (11) :5142-5153

[3] Metal-insulator transition in 2D: resistance in the critical region [J].

Altshuler, BL ;

Maslov, DL ;

Pudalov, VM .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2001, 9 (02) :209-225

[4] Anomalous magnetoresistance in p-type quantum wells [J].

Averkiev, NS ;

Golub, LE ;

Pikus, GE .

SOLID STATE COMMUNICATIONS, 1998, 107 (12) :757-761

[5] Cyclotron resonance in ultra-low-hole-density narrow p-type GaAs/(Al,Ga)As quantum wells [J].

Cole, BE ;

Chamberlain, JM ;

Henini, M ;

Cheng, T ;

Batty, W ;

Wittlin, A ;

Perenboom, JAAJ ;

Ardavan, A ;

Polisski, A ;

Singleton, J .

PHYSICAL REVIEW B, 1997, 55 (04) :2503-2511

[6] Calculated temperature-dependent resistance in low-density two-dimensional hole gases in GaAs heterostructures [J].

Das Sarma, S ;

Hwang, EH .

PHYSICAL REVIEW B, 2000, 61 (12) :R7838-R7841

[7] THEORY OF WEAKLY LOCALIZED REGIME OF THE ANDERSON LOCALIZATION IN 2-DIMENSIONS [J].

FUKUYAMA, H .

SURFACE SCIENCE, 1982, 113 (1-3) :489-504

[8] Two-dimensional metal in a parallel magnetic field [J].

Gao, XPA ;

Mills, AP ;

Ramirez, AP ;

Pfeiffer, LN ;

West, KW .

PHYSICAL REVIEW LETTERS, 2002, 88 (16) :4-166803

[9]

GAO XPA, CONDMAT0203151

[10] The metalliclike conductivity of a two-dimensional hole system [J].

Hanein, Y ;

Meirav, U ;

Shahar, D ;

Li, CC ;

Tsui, DC ;

Shtrikman, H .

PHYSICAL REVIEW LETTERS, 1998, 80 (06) :1288-1291

← 1 2 3 →