Chirality effect on superconductivity

Chirality effect on superconductivity
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对超导性的手性效应

DOI:
10.1088/1742-6596/603/1/012007
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发表时间:
2015
期刊:
J. Phys.: Conf. Ser.
影响因子:
--
通讯作者:
T. Morinari
T. Morinari
中科院分区:
--
文献类型:
--
作者:
K. Mibu;H. Yanagihara;E. Kita;and J. Inoue;T. Morinari

文献摘要

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我们考虑具有手性特征的电子系统,例如狄拉克费米子系统和铁基超导体。我们研究了这种系统中超导态的手性效应。我们证明手性效应导致超导间隙函数中的节点结构。节点创建机制取决于配对相互作用的波矢 q 和表征电子手性的涡度。对于 q=(π, 0) 的狄拉克费米子的情况和 q=(π, π) 的铁基超导体的情况,由于手性而产生的节点效应非常显着。
We consider electron systems characterized by chirality, such as Dirac fermion systems and iron-based superconductors. We investigate the chirality effect on superconducting states in such a system. We show that chirality effect leads to a nodal structure in the superconducting gap function. The node creation mechanism depends on the wave vector q of the pairing interaction and vorticity that characterizes chirality of electrons. The node creation effect due to chirality is significant for the case of Dirac fermions with q=(π, 0) and for the case of iron-based superconductors with q=(π, π).