EQUILIBRIUM MAGNETIC-PROPERTIES AND MEISSNER EXPULSION OF MAGNETIC-FLUX IN BI2SR2CACU2OX SINGLE-CRYSTALS

被引：102

作者：

INDENBOM, MV

KRONMULLER, H

LI, TW

KES, PH

MENOVSKY, AA

机构：

[1] LEIDEN UNIV, KAMERLINGH ONNES LAB, 2300 RA LEIDEN, NETHERLANDS

[2] UNIV AMSTERDAM, VAN DER WAALS ZEEMAN LAB, 1018 XE AMSTERDAM, NETHERLANDS

[3] RUSSIAN ACAD SCI, INST SOLID STATE PHYS, CHERNOGOLOVKA 142432, RUSSIA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 222卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(94)90534-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The unusual spatial transformation of the magnetic-flux structure in Bi2Sr2CaCu2Ox single crystals during magnetization of zero-field cooled samples and during field cooling (the Meissner flux expulsion) is directly visualized by means of the magneto-optical technique. In both cases similar inhomogeneous flux distributions are observed at high temperatures in a magnetic field applied perpendicularly to the basal plane: The magnetic field in the crystal center is approximately equal to the applied field, but at the crystal perimeter a belt of lower field occurs. A model of such an equilibrium flux structure is developed taking into account the real shape of the crystals. The distribution of the Meissner screening current in this geometry is directly measured for the first time.

引用

页码：203 / 211

页数：9

共 41 条

[1] PENETRATION OF MAGNETIC FLUX INTO SUPERCONDUCTING INDIUM [J].