Determining the Wiedemann-Franz ratio from the thermal Hall conductivity: Application to Cu and YBa2Cu3O6.95
Y. Zhang, N. P. Ong, Z. A. Xu, R. Gagnon, L. Taillefer
Abstract
The Wiedemann-Franz (WF) ratio compares the thermal and electrical conductivities in a metal. We describe a new way to determine its value, based on the thermal Hall conductivity. The technique is applied to copper and to untwinned YBaCuO. In the latter, we uncover a T-linear dependence and suppression of the Hall-channel WF ratio. We discuss the implications of this suppressions. The general suppression of the WF ratio in systems with predominant electron-electron scattering is discussed.
Create a lesson
Related papers
Driven Vortex Motion in Periodic Channel Potential Embedded in Superconducting Films
A. Al Luhaibi, A. Glatz, Michael Vogl et al.
Kink boundary-induced polarity revealed by nonreciprocal charge transport in FeTe0.7Se0.3 superconductor
Shengyao Li, Ya Deng, Han Yan et al.
Chemical-Potential-Dependent Superconducting Spectroscopy on Bi2Te3/NbSe2 Heterostructures
Pengyu Hu, Chun Yu Wan, Qiaoyan Yu et al.
Quantum Geometry and Pair Breaking in Intra- and Intervalley Superconductivity of Rhombohedral Graphene
Louis Primeau, Yang Zhang, Shi-Zeng Lin
Pre-pairing and polarization of doped charge carriers in unconventional superconductors
Lixin Zhang, Mengyan Nie, Yan Cheng et al.
Altermagnetic Control of Charge-4e Superconductivity
Yan-Guang Yue, Jie Lou, Yan Chen