Thermal Hall conductivity and topological transition in a chiral p-wave superconductor for Sr2RuO4
Thermal Hall conductivity and topological transition in a chiral p-wave superconductor for Sr2RuO4
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Sr2RuO4 手性 p 波超导体的热霍尔电导率和拓扑转变
DOI：
10.1103/physrevb.93.024510
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
and Manfred Sigrist
中科院分区：
文献类型：
--
作者：
Yoshiki Imai;Katsunori Wakabayashi;and Manfred Sigrist
本文研究了强二维自旋三重态手征波超导体的热输运性质与拓扑性质之间的相互影响。我们表明，霍尔热导率很好地描述了一个温度线性项和指数项在低温区。前者与所谓的陈数成正比，后者与能带的超导能隙振幅有关。我们还证明了指数项的系数在Lifshitz转变附近改变符号。所得结果使我们能够容易地获得详细的物理量和拓扑性质。
The interplay between thermal transport properties and topological aspects is investigated in a spin-triplet chiral-wave superconductorwith strong two dimensionality. We show that thermal Hall conductivity is well described by a temperature linear term and an exponential term in the low-temperature region. While the former term is directly proportional to the so-called Chern number, the latter is associated with the superconducting gap amplitude of theband. We also demonstrate that the coefficient of the exponential term changes sign around the Lifshitz transition. Our obtained result may enable us to easily access the physical quantities and topological properties ofin detail.