Enhancement of superconductivity in disordered films by parallel magnetic field

被引：0
|
作者：
M. Yu. Kharitonov
M. V. Feigelman
机构：
[1] Russian Academy of Sciences,Landau Institute for Theoretical Physics
[2] Ruhr-Universität Bochum,undefined
来源：
Journal of Experimental and Theoretical Physics Letters | 2005年 / 82卷
关键词：
74.25.Ha; 74.78.−w; 74.78.Na;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We show that the superconducting transition temperature Tc(H) of a very thin highly disordered film with strong spin-orbital scattering can be increased by a parallel magnetic field H. This effect is due to the polarization of magnetic impurity spins, which reduces the full exchange scattering rate of electrons; the largest effect is predicted for spin-1/2 impurities. Moreover, for some range of magnetic impurity concentrations, the phenomenon of superconductivity induced by magnetic field is predicted: the superconducting transition temperature Tc(H) is found to be nonzero in the range of magnetic fields 0 < H* ≤ H ≤ Hc.
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页码：421 / 425
页数：4
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