HIGH-FIELD VS LOW-FIELD MAGNETOTRANSPORT IN A PERCOLATING MEDIUM

被引：3

作者：

BERGMAN, DJ ^{[1
]}

SARYCHEV, AK ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST HIGH TEMP,MOSCOW,RUSSIA

来源：

PHYSICA A | 1993年 / 200卷 / 1-4期

关键词：

D O I：

10.1016/0378-4371(93)90521-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent theoretical and numerical work on high-field magneto-transport in a percolating medium is described and compared to earlier work on weak-field magneto-transport in such systems. While the weak-field behavior is well described by the simple nodes-links picture, which ignores blobs and loops on a scale smaller than the percolation correlation length xi(p), the strong-field behavior is extremely sensitive to those features. The critical behavior at strong magnetic fields H near the percolation threshold is governed by a competition between the usual H = 0 fixed point and a new H = infinity fixed point. Which of those fixed points dominates the behavior is determined by the relative sizes of two characteristic lengths: the percolation correlation length xi(p) and a new, magnetic field dependent length xi(H).

引用

页码：231 / 240

页数：10

共 13 条

[1] DISCRETE NETWORK MODELS FOR THE LOW-FIELD HALL-EFFECT NEAR A PERCOLATION-THRESHOLD - THEORY AND SIMULATIONS [J].

BERGMAN, DJ ;

DUERING, E ;

MURAT, M .

JOURNAL OF STATISTICAL PHYSICS, 1990, 58 (1-2) :1-43

[2] HIGH-FIELD MAGNETOTRANSPORT IN A SIERPINSKI GASKET FRACTAL [J].

BERGMAN, DJ ;

SARYCHEV, AK .

PHYSICA A, 1992, 191 (1-4) :470-474

[3] THERMAL PHASE-TRANSITION OF THE DILUTE S-STATE POTTS AND N-VECTOR MODELS AT THE PERCOLATION-THRESHOLD [J].

CONIGLIO, A .

PHYSICAL REVIEW LETTERS, 1981, 46 (04) :250-253

[4] CLUSTER STRUCTURE NEAR THE PERCOLATION-THRESHOLD [J].

CONIGLIO, A .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1982, 15 (12) :3829-3844

[5]

CONIGLIO A, 1981, LECTURE NOTES PHYSIC, V149

[6]

DEGENNES PG, 1976, J PHYS LETT-PARIS, V37, pL1, DOI 10.1051/jphyslet:019760037010100

[7] PERCOLATIVE CONDUCTION IN 3 DIMENSIONS [J].

GINGOLD, DB ;

LOBB, CJ .

PHYSICAL REVIEW B, 1990, 42 (13) :8220-8224

[8] HIGH-FIELD MAGNETOTRANSPORT IN A PERCOLATING MEDIUM [J].

SARYCHEV, AK ;

BERGMAN, DJ ;

STRELNIKER, YM .

EUROPHYSICS LETTERS, 1993, 21 (08) :851-857

[9]

SARYCHEV AK, IN PRESS PHYS REV B

[10]

SKAL AS, 1975, SOV PHYS SEMICOND+, V8, P1029

← 1 2 →