Logarithmic temperature dependence of conductivity at half filled landau level

被引：26

作者：

Khveshchenko, DV

机构：

[1] NORDITA, Copenhagen, DK-2100

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.77.362

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the temperature dependence of the longitudinal conductivity at half filled Landau level by means of the theory of composite fermions in the weakly disordered regime (k(F)l >> 1). At low temperatures we find the leading In T correction resulting from the interference between impurity scattering and gauge interactions of the composite fermions. The prefactor appears to be strongly enhanced as compared to the standard Altshuler-Aronov term in agreement with recent experimental observations.

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页码：362 / 365

页数：4

相关论文

共 26 条

[1] ZERO BIAS ANOMALY IN TUNNEL RESISTANCE AND ELECTRON-ELECTRON INTERACTION [J].

ALTSHULER, BL ;

ARONOV, AG .

SOLID STATE COMMUNICATIONS, 1979, 30 (03) :115-117

[2] INTERACTION EFFECTS IN DISORDERED FERMI SYSTEMS IN 2 DIMENSIONS [J].

ALTSHULER, BL ;

ARONOV, AG ;

LEE, PA .

PHYSICAL REVIEW LETTERS, 1980, 44 (19) :1288-1291

[3] LOCALIZATION OF CHARGED QUANTUM PARTICLES IN A STATIC RANDOM MAGNETIC-FIELD [J].

ARONOV, AG ;

MIRLIN, AD ;

WOLFLE, P .

PHYSICAL REVIEW B, 1994, 49 (23) :16609-16613

[4] THERMOPOWER IN THE REENTRANT INSULATING PHASE OF A 2-DIMENSIONAL HOLE SYSTEM [J].

BAYOT, V ;

YING, X ;

SANTOS, MB ;

SHAYEGAN, M .

EUROPHYSICS LETTERS, 1994, 25 (08) :613-618

[5] INTERACTION-DRIVEN METAL-INSULATOR TRANSITIONS IN DISORDERED FERMION SYSTEMS [J].

CASTELLANI, C ;

DICASTRO, C ;

LEE, PA ;

MA, M .

PHYSICAL REVIEW B, 1984, 30 (02) :527-543

[6]

COLERIDGE PT, 1995, PHYS REV B, V52, P11588

[7] DRASTIC ENHANCEMENT OF COMPOSITE FERMION MASS NEAR LANDAU-LEVEL FILLING NU=1/2 [J].

DU, RR ;

STORMER, HL ;

TSUI, DC ;

YEH, AS ;

PFEIFFER, LN ;

WEST, KW .

PHYSICAL REVIEW LETTERS, 1994, 73 (24) :3274-3277

[8] CONDUCTANCE FLUCTUATIONS IN SYSTEMS WITH A RANDOM-MAGNETIC-FIELD SCATTERING [J].

FALKO, VI .

PHYSICAL REVIEW B, 1994, 50 (23) :17406-17410

[9]

FINKELSTEIN AM, 1983, ZH EKSP TEOR FIZ, V57, P97

[10] DETECTION OF COMPOSITE FERMIONS BY MAGNETIC FOCUSING [J].

GOLDMAN, VJ ;

SU, B ;

JAIN, JK .

PHYSICAL REVIEW LETTERS, 1994, 72 (13) :2065-2068