ANISOTROPIC SCALING IN DEPINNING OF A FLUX-LINE

被引：57

作者：

ERTAS, D

KARDAR, M

机构：

[1] Department of Physics, Massachusetts Institute of Technology, Cambridge

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.73.1703

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the depinning of a flux line by analytical and numerical methods. Transverse fluctuations do not influence the critical behavior of the longitudinal component justifying ''planar approximations.'' In an isotropic medium, longitudinal fluctuations have a roughness exponentaa zeta parallel to = 1, and relax with a dynamic exponent z parallel to approximate to 4/3; transverse fluctuations are suppressed (zeta perpendicular to, = 1/2 < zeta)parallel to and relax more slowly, with z perpendicular to = z parallel to + 1. Anisotropy in the depinning threshold, or orientational dependence of force-force correlations, lead to new universality classes.

引用

收藏

页码：1703 / 1706

页数：4

相关论文

共 31 条

[1]

BLATTER G, UNPUB ETH REPORT

[2] ANOMALOUS INTERFACE ROUGHENING IN POROUS-MEDIA - EXPERIMENT AND MODEL [J].

BULDYREV, SV ;

BARABASI, AL ;

CASERTA, F ;

HAVLIN, S ;

STANLEY, HE ;

VICSEK, T .

PHYSICAL REVIEW A, 1992, 45 (12) :R8313-R8316

[3] VORTEX CONFINEMENT BY COLUMNAR DEFECTS IN YBA2CU3O7 CRYSTALS - ENHANCED PINNING AT HIGH FIELDS AND TEMPERATURES [J].

CIVALE, L ;

MARWICK, AD ;

WORTHINGTON, TK ;

KIRK, MA ;

THOMPSON, JR ;

KRUSINELBAUM, L ;

SUN, Y ;

CLEM, JR ;

HOLTZBERG, F .

PHYSICAL REVIEW LETTERS, 1991, 67 (05) :648-651

[4] ELASTIC STRING IN A RANDOM POTENTIAL [J].

DONG, M ;

MARCHETTI, MC ;

MIDDLETON, AA ;

VINOKUR, V .

PHYSICAL REVIEW LETTERS, 1993, 70 (05) :662-665

[5] VORTEX MOTION AND THE HALL-EFFECT IN TYPE-II SUPERCONDUCTORS - A TIME-DEPENDENT GINZBURG-LANDAU THEORY APPROACH [J].

DORSEY, AT .

PHYSICAL REVIEW B, 1992, 46 (13) :8376-8392

[6] COMPUTER-SIMULATIONS OF A MAGNETIC-FLUX MOTION IN RANDOM IMPURITIES [J].

ENOMOTO, Y .

PHYSICS LETTERS A, 1991, 161 (02) :185-189

[7] COMPUTER-SIMULATIONS OF A VORTEX LINE MOTION IN TYPE-II SUPERCONDUCTORS [J].

ENOMOTO, Y ;

KATSUMI, K ;

KATO, R ;

MAEKAWA, S .

PHYSICA C, 1992, 192 (1-2) :166-172

[8] DYNAMIC ROUGHENING OF DIRECTED LINES [J].

ERTAS, D ;

KARDAR, M .

PHYSICAL REVIEW LETTERS, 1992, 69 (06) :929-932

[9] CRITICAL-DYNAMICS OF CONTACT LINE DEPINNING [J].

ERTAS, D ;

KARDAR, M .

PHYSICAL REVIEW E, 1994, 49 (04) :R2532-R2535

[10] DYNAMIC RELAXATION OF DRIFTING POLYMERS - A PHENOMENOLOGICAL APPROACH [J].

ERTAS, D ;

KARDAR, M .

PHYSICAL REVIEW E, 1993, 48 (02) :1228-1245

← 1 2 3 4 →