Low-Temperature Thermal Conductivity of Superconductors with Gap Nodes

Tomas Löfwander; Mikael Fogelström

doi:10.1103/PhysRevLett.95.107006

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Low-Temperature Thermal Conductivity of Superconductors with Gap Nodes

Tomas Löfwander, Mikael Fogelström

DOI 10.1103/PhysRevLett.95.107006 · Physical Review Letters

T1

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Abstract

We report a detailed analytic and numerical study of electronic thermal conductivity in d-wave superconductors. We compare theory of the crossover at low temperatures from T dependence to T3 dependence for increasing temperature with recent experiments on YBa2Cu3O7 in zero magnetic field for T∈[0.04 K,0.4 K] by Hill et al. [Phys. Rev. Lett. 92, 027001 (2004)]. Transport theory, including impurity scattering and inelastic scattering within strong-coupling superconductivity, can consistently fit the temperature dependence of the data in the lower half of the temperature regime. We discuss the conditions under which we expect power-law dependences over wide temperature intervals.

Source-reported materials — not catalogue approval

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