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arXiv 1209.0884cond-mat.supr-con
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具有非零质心对动量的手征d波超导体

Chiral d-wave superconductor with nonzero center-of-mass pair momentum

V. I. Belyavsky, V. V. Kapaev, Yu. V. Kopaev

摘要:

本文讨论了在排斥屏蔽库仑作用占优势的情况下,大质心对动量配对问题中二维电子系统的假设拓扑非平凡超导态。自洽方程的直接数值解显示出两个近似简并的序参量,它们可以正式地称为$d^{}_{x^2-y^2}$和$d^{}_{xy}$轨道对称性。时间反演对称性的自发破缺可以混合这些态,形成完全带隙的手征$d+id$超导态。

英文摘要:

Hypothetical topologically nontrivial superconducting state of two-dimensional electron system is discussed in connection with the problem of pairing with large center-of-mass pair momentum under predominant repulsive screened Coulomb interaction. Direct numerical solution of the self-consistency equation exhibits two nearly degenerate order parameters which can be formally referred to $d^{}_{x^2-y^2}$ and $d^{}_{xy}$ orbital symmetry. Spontaneous breaking of the time-reversal symmetry can mix these states and form fully gapped chiral $d+id$ superconducting state.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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