Anisotropic Superconductivity of Quasi-One-Dimensional Electrons in Magnetic Field
Anisotropic Superconductivity of Quasi-One-Dimensional Electrons in Magnetic Field
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磁场中准一维电子的各向异性超导
DOI：
10.1143/jpsj.65.3283
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Y. Hasegawa
中科院分区：
文献类型：
--
作者：
M. Miyazaki;Y. Hasegawa
从理论上研究了准一维各向异性超导体在磁场中的转变温度TC(H)，这被认为是在有机导体(TMTSF)2X中实现的。在弱场极限下，各向异性单重态的-dHc2/dT是各向异性三重态的-dHc2/dT的两倍。在强场区，自旋三重态的转变温度恢复到零场临界温度，而各向异性自旋单重态受到塞曼效应的抑制。随着磁场的增加，存在由各向异性单态向各向异性三态的转变。
We study theoretically the transition temperature T c ( H ) of a quasi-one-dimensional anisotropic superconductor in a magnetic field, which is thought to be realized in organic conductors, (TMTSF) 2 X. In the weak field limit, - d H c2 / d T for the anisotropic singlet is shown to be \(\sqrt{3}\) times larger than that for the anisotropic triplet in the case of attractive interaction of electrons at nearest-sites along the c axis and magnetic field along the b axis. In the strong field region the transition temperature for spin-triplet is restored to zero field critical temperature while the anisotropic spin-singlet is suppressed by the Zeeman effect. There should be transition from anisotropic singlet to anisotropic triplet as the magnetic field is increased.