MEISSNER-STATE DIAMAGNETISM IN GRANULAR HIGH-TC SUPERCONDUCTORS

被引：16

作者：

HODGDON, ML ^{[1
]}

NAVARRO, R ^{[1
]}

CAMPBELL, LJ ^{[1
]}

机构：

[1] UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545

来源：

EUROPHYSICS LETTERS | 1991年 / 16卷 / 07期

关键词：

D O I：

10.1209/0295-5075/16/7/012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The diamagnetic interactions between Meissner-state superconducting grains are studied by explicit solution of finite clusters of 2, 4, and 6 diamagnetic spheres and by effective medium theories in the infinite-sphere limit. The compression of magnetic field between two spheres found by Waysand (Europhys. Lett., 5 (1988) 73) is shown to be strongly dependent on orientation and sharply reduced by shielding inside clusters with more than two spheres. When the number of spheres goes to infinity, effective medium theories predict generic average intergranular fields smaller than the applied field, but specific values depend on the macroscopic shape of the sphere cluster.

引用

页码：677 / 682

页数：6

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