Determining the wiedemann-franz ratio from the thermal hall conductivity: Application to Cu and YBa2Cu3O6.95

Y. Zhang; N. P. Ong; Z. A. Xu; K. Krishana; R. Gagnon; L. Taillefer

doi:10.1103/PhysRevLett.84.2219

Determining the wiedemann-franz ratio from the thermal hall conductivity: Application to Cu and YBa₂Cu₃O_6.95

Y. Zhang, N. P. Ong, Z. A. Xu, K. Krishana, R. Gagnon, L. Taillefer

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113 Scopus citations

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 suppression. The general suppression of the WF ratio in systems with predominant electron-electron scattering is discussed.

Original language	English (US)
Pages (from-to)	2219-2222
Number of pages	4
Journal	Physical review letters
Volume	84
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.84.2219
State	Published - 2000

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.84.2219

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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 suppression. The general suppression of the WF ratio in systems with predominant electron-electron scattering is discussed.",

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AU - Xu, Z. A.

AU - Krishana, K.

AU - Gagnon, R.

AU - Taillefer, L.

PY - 2000

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N2 - 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 suppression. The general suppression of the WF ratio in systems with predominant electron-electron scattering is discussed.

AB - 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 suppression. The general suppression of the WF ratio in systems with predominant electron-electron scattering is discussed.

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JO - Physical review letters

JF - Physical review letters

IS - 10

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Determining the wiedemann-franz ratio from the thermal hall conductivity: Application to Cu and YBa₂Cu₃O_6.95

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All Science Journal Classification (ASJC) codes

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