Magneto-Seebeck effect and ambipolar Nernst effect in the CsV3Sb5 superconductor
Magneto-Seebeck effect and ambipolar Nernst effect in the CsV3Sb5 superconductor
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CsV3Sb5 超导体中的磁塞贝克效应和双极能斯特效应
DOI：
10.1103/physrevb.104.l180508
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发表时间：
2021
影响因子：
3.7
通讯作者：
Mingquan He
中科院分区：
文献类型：
--
作者：
Yuhan Gan;Wei Xia;Long Zhang;Kunya Yang;Xinrun Mi;Aifeng Wang;Yisheng Chai;Yanfeng Guo;Xiaoyuan Zhou;Mingquan He
结合磁阻和霍尔测量，我们研究了Kagome超导体的Seebeck和Nernst效应。一旦电荷密度波(CDW)级数设置在K以下，就会出现相当大的磁塞贝克信号。能斯特信号在一个较低的温度下达到峰值，霍尔系数在这个温度上切换符号，我们将其归因于补偿频带的双极传输，这是由于多频带的性质。次线性能斯特信号和霍尔电阻率也在CDW转变以下发展得很好，这在下面变得明显。这些发现表明，多带电子分布对CdW态的输运性质起着重要作用。
We present a study of Seebeck and Nernst effect in combination with magnetoresistance and Hall measurements of the Kagome superconductor. A sizable magneto-Seebeck signal appears once the charge density wave (CDW) order sets in belowK. The Nernst signal peaks at a lower temperature, crossing which the Hall coefficient switches sign, which we attribute to the ambipolar transport of compensated bands due to the multiband nature of. Sublinear Nernst signal and Hall resistivity also develop well below the CDW transition, which becomes apparent below. These findings suggest that, the multiband electronic profile plays an important role in the transport properties of the CDW state in.