Kinetic roughening of magnetic flux fronts in Bi2Sr2CaCu2O8+δ crystals with columnar defects

被引：3

作者：

Barness, D. ^{[1
,2
]}

Efraim, Y.

Taitelbaum, H. ^{[1
]}

Sinvani, M. ^{[1
,2
]}

Shaulov, A. ^{[1
,2
]}

Yeshurun, Y. ^{[1
,2
]}

机构：

[1] Bar Ilan Univ, Dept Phys, Inst Superconduct, IL-52900 Ramat Gan, Israel

[2] Bar Ilan Univ, Ctr Nanotechnol, IL-52900 Ramat Gan, Israel

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 17期

基金：

以色列科学基金会;

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; SELF-ORGANIZED CRITICALITY; TRANSIENT VORTEX STATES; DISORDERED MEDIA; CORRELATED DISORDER; BOSON LOCALIZATION; SLOW COMBUSTION; MGB2; FILMS; THIN-FILMS; AVALANCHES;

D O I：

10.1103/PhysRevB.85.174516

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Kinetic roughening analysis is utilized to investigate fingerlike flux-front patterns observed in a Bi2Sr2CaCu2O8+delta single crystal incorporating columnar defects. At small-length scales, scaling exponents consistent with the Kardar-Parisi-Zhang (KPZ) model for a moving front in quenched noise (QKPZ) are found. A crossover to scaling exponents of a KPZ system, dominated by temporal noise, can be identified at a large-length scale, which increases with temperature. The induction-temperature range for which the QKPZ behavior is observed is linked to the accommodation line characterizing the crossover between dominating vortex-defects and vortex-vortex interaction regimes.

引用

页数：5

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