Collective modes in the TRSB phase of multiband superconductors

Collective modes in the TRSB phase of multiband superconductors
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多带超导体TRSB相的集体模式

DOI:
10.1016/j.phpro.2016.04.011
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发表时间:
2016
期刊:
Physics Procedia
影响因子:
--
通讯作者:
Tomio Koyama
Tomio Koyama
中科院分区:
--
文献类型:
--
作者:
Dexin Li;Yoshiya Homma;Fuminori Honda;Tomoo Yamamura and Dai Aoki;Tomio Koyama

文献摘要

相似文献

本文发展了一种多带超导体中序参量振荡模式的理论,其中所有的超导带隙不能是真实的数(TRSB相位),并计算了振幅和相位模式的相关函数。由电子和集体模之间的散射所产生的顶点函数被确定为满足Ward-Takahashi恒等式。在电子对破缺阈值能量附近出现了多振幅模。
We develop a theory for the oscillation modes of the order parameters in multiband superconductors in which all the superconducting gaps cannot be real numbers (TRSB phase) and calculate the correlation functions for the amplitude and phase modes. The vertex functions arising from the scattering between electrons and the collective modes are determined so as to satisfy the Ward-Takahashi identity. It is also shown that the multiple amplitude modes appear in the region near the pair-breaking threshold energies.