Scaling of the conductivity of Si:B: Anomalous crossover in a magnetic field

被引：7

作者：

Bogdanovich, S

Dai, PH

Sarachik, MP

Dobrosavljevic, V

Kotliar, G

机构：

[1] FLORIDA STATE UNIV,NATL HIGH MAGNET FIELD LAB,TALLAHASSEE,FL 32306

[2] RUTGERS STATE UNIV,SERIN PHYS LAB,PISCATAWAY,NJ 08854

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.55.4215

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The zero-temperature conductivity of Si:B with dopant concentrations near the metal-insulator transition exhibits scaling as a function of magnetic field with an anomalously large crossover exponent. The large value of delta is associated with unusual behavior of the magnetoconductance, which vanishes as a power law approaching the transition. This demonstrates that Si:B, which has an anomalous critical conductivity exponent in zero field, also exhibits unusual behavior in response to a magnetic field.

引用

收藏

页码：4215 / 4218

页数：4

相关论文

共 29 条

[1] THE ANDERSON-MOTT TRANSITION [J].

BELITZ, D ;

KIRKPATRICK, TR .

REVIEWS OF MODERN PHYSICS, 1994, 66 (02) :261-390

[2] CROSSOVER EXPONENT FOR A WEAK MAGNETIC-FIELD AT THE LOCALIZATION ORTHOGONAL FIXED-POINT [J].

BIAFORE, M ;

CASTELLANI, C ;

KOTLIAR, G .

NUCLEAR PHYSICS B, 1990, 340 (2-3) :617-632

[3] UNIVERSAL SCALING OF THE MAGNETOCONDUCTANCE OF METALLIC SI-B [J].

BOGDANOVICH, S ;

DAI, PH ;

SARACHIK, MP ;

DOBROSAVLJEVIC, V .

PHYSICAL REVIEW LETTERS, 1995, 74 (13) :2543-2546

[4] THE MAGNETIC-FIELD CROSSOVER EXPONENT PROBLEM REVISITED [J].

CASTELLANI, C ;

KOTLIAR, G .

PHYSICA A, 1990, 167 (01) :294-300

[5] FINITE-SIZE SCALING AND CORRELATION LENGTHS FOR DISORDERED-SYSTEMS [J].

CHAYES, JT ;

CHAYES, L ;

FISHER, DS ;

SPENCER, T .

PHYSICAL REVIEW LETTERS, 1986, 57 (24) :2999-3002

[6] CRITICAL CONDUCTIVITY EXPONENT FOR SI-B [J].

DAI, PH ;

ZHANG, YH ;

SARACHIK, MP .

PHYSICAL REVIEW LETTERS, 1991, 66 (14) :1914-1917

[7] ELECTRICAL-CONDUCTIVITY OF METALLIC SI-B NEAR THE METAL-INSULATOR-TRANSITION [J].

DAI, PH ;

ZHANG, YZ ;

SARACHIK, MP .

PHYSICAL REVIEW B, 1992, 45 (08) :3984-3994

[8] EFFECT OF A MAGNETIC-FIELD ON THE CRITICAL CONDUCTIVITY EXPONENT AT THE METAL-INSULATOR-TRANSITION [J].

DAI, PH ;

ZHANG, YZ ;

SARACHIK, MP .

PHYSICAL REVIEW LETTERS, 1991, 67 (01) :136-139

[9] HUBBARD MODELS WITH RANDOM HOPPING IN D = INFINITY [J].

DOBROSAVLJEVIC, V ;

KOTLIAR, G .

PHYSICAL REVIEW LETTERS, 1993, 71 (19) :3218-3221

[10] STRONG CORRELATIONS AND DISORDER IN D=INFINITY AND BEYOND [J].

DOBROSAVLJEVIC, V ;

KOTLIAR, G .

PHYSICAL REVIEW B, 1994, 50 (03) :1430-1449