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STRONG ELECTRON-PHONON COUPLINGAND THE RESISTIVE TRANSITION INMgB2 AND HIGH TEMPERATURE SUPERCONDUCTORS
Author(s): 
Pages: 261-268
Year: Issue:  4
Journal: CHINESE JOURNAL OF LOW TEMPERATURE PHYSICS

Abstract: 我们对MgB2和高临界温度的铜氧化合物超导体进行了对比研究.MgB2显示出以声子为媒介的BCS超导体的典型行为.对所谓的McMillan-Hopfield系数的解析表达暗示具有高角动量l的导带l(l±1)杂化对强BCS超导体有利.我们还分析讨论了高临界温度铜氧化物和MgB2的传输性质,发现一个统一的R(T,H)方程,可以很好地描述与MgB2和YBCO无孪单晶在B8T的宽场强范围内的正常态-超导电阻转变.
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