ULTRASONIC-ATTENUATION BY THE VORTEX LATTICE OF HIGH-TC SUPERCONDUCTORS

被引：83

作者：

PANKERT, J ^{[1
]}

MARBACH, G ^{[1
]}

COMBERG, A ^{[1
]}

LEMMENS, P ^{[1
]}

FRONING, P ^{[1
]}

EWERT, S ^{[1
]}

机构：

[1] RHEIN WESTFAL TH AACHEN,INST PHYS 2,W-5100 AACHEN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 24期

关键词：

36;

D O I：

10.1103/PhysRevLett.65.3052

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the transverse sound attenuation and velocity in a ceramic Bi1.6Pb0.4Sr2Ca2Cu3Oy superconductor (Tc=110 K) were performed with and without a magnetic field. Pronounced peaks in the field-induced attenuation and an increase of the velocity at low temperatures were observed. These effects can be attributed to the transition of a rigidly pinned flux-line lattice into a depinned state. A quantitative explanation is presented within the framework of thermally assisted flux flow and without any adjustable parameter. © 1990 The American Physical Society.

引用

页码：3052 / 3055

页数：4

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