Sheet superconductivity in twin walls:: experimental evidence of WO3-x

被引:280
作者
Aird, A
Salje, EKH
机构
[1] Univ Cambridge, Irc Superconduct, Cambridge CB2 3EQ, England
[2] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
关键词
D O I
10.1088/0953-8984/10/22/003
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Single crystals of WO3 that contain ferroelastic twin walls have been chemically deoxygenated using a gas transport reaction with Na vapour. The reaction product consists of a non-superconducting matrix of tetragonal WO3-x and superconducting twin boundaries. The superconducting transition temperature is 3 K. The upper critical field has been measured; its temperature dependence shows BCS type behaviour at T < 2.5 K and a weak tail near T-c.
引用
收藏
页码:L377 / L380
页数:4
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