Giant Enhancement of the Thermal Hall Conductivity κxy in the Superconductor YBa2Cu3O7

Y. Zhang; N. P. Ong; P. W. Anderson; D. A. Bonn; R. Liang; W. N. Hardy

doi:10.1103/PhysRevLett.86.890

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Giant Enhancement of the Thermal Hall Conductivity κxy in the Superconductor YBa2Cu3O7

Y. Zhang, N. P. Ong, P. W. Anderson, D. A. Bonn, R. Liang, W. N. Hardy

DOI 10.1103/PhysRevLett.86.890 · Physical Review Letters

T1

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Abstract

In high-purity YBa2Cu3O7, the (weak-field) thermal Hall conductivity κxy is observed to increase a thousand-fold between 90 and 30 K. The inferred quasiparticle lifetime τ increases a hundred-fold starting below 90 K, in disagreement with a recent photoemission experiment. We show that κxy exhibits a specific scaling behavior below ∼30K. This scaling may bear on the issue of whether Landau quantization of the quasiparticle states occurs.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6.99 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	89	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	90	Pressure not reported	unknown
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown