arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.0987cond-mat.supr-con
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非常规超导体Sr $_2$ RuO $_4$中Bogoliubov准粒子Bloch态的Berry曲率

The Berry curvature of the Bogoliubov quasiparticle Bloch states in the unconventional superconductor Sr$_2$RuO$_4$

Martin Gradhand, James F. Annett

摘要:

我们将把电子带Berry曲率的概念推广到超导材料。我们表明,这可以定义为Bogoliubov-de Gennes方程描述的超导状态的周期性晶体。此外,这一概念也被用来理解时间反演对称性破缺超导体中光学克尔效应的驱动机制。最后,我们建立了一个求和规则模拟正常状态霍尔求和规则之间的光学电导率的虚部和Berry曲率的定量联系。一般的理论将被应用和测试对果蝇的p波配对材料Sr $_2$ RuO $_4$。

英文摘要:

We will extend the concept of electron band Berry curvatures to superconducting materials. We show that this can be defined for the Bogoliubov-de Gennes equation describing the superconducting state in a periodic crystal. In addition, the concept is exploited to understand the driving mechanism for the optical Kerr effect in time reversal symmetry breaking superconductors. Finally, we establish a sum rule analogue to the normal state Hall sum rule making quantitative contact between the imaginary part of the optical conductivity and the Berry curvature. The general theory will be applied and tested against the drosophila of the p-wave paired materials Sr$_2$RuO$_4$.

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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