Magneto-Seebeck effect and ambipolar Nernst effect in the CsV3Sb5 superconductor
Yuhan Gan, Wei Xia, Long Zhang, Kunya Yang, Xinrun Mi, Aifeng Wang, Yisheng Chai, Yanfeng Guo, Xiaoyuan Zhou, Mingquan He
DOI 10.1103/PhysRevB.104.L180508 · Physical Review B
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Abstract
We present a study of Seebeck and Nernst effect in combination with magnetoresistance and Hall measurements of the Kagome superconductor CsV3Sb5. A sizable magneto-Seebeck signal appears once the charge density wave (CDW) order sets in below TCDW=94 K. The Nernst signal peaks at a lower temperature T*∼35K, crossing which the Hall coefficient switches sign, which we attribute to the ambipolar transport of compensated bands due to the multiband nature of CsV3Sb5. Sublinear Nernst signal and Hall resistivity also develop well below the CDW transition, which becomes apparent below T*. These findings suggest that, the multiband electronic profile plays an important role in the transport properties of the CDW state in CsV3Sb5.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CsV3Sb5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.7 | Pressure not reported | zero_resistance |
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