Absence of singular superconducting fluctuation corrections to thermal conductivity

Douglas R. Niven; Robert A. Smith

doi:10.1103/PhysRevB.66.214505

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Absence of singular superconducting fluctuation corrections to thermal conductivity

Douglas R. Niven, Robert A. Smith

DOI 10.1103/PhysRevB.66.214505 · Physical Review B

T1

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Abstract

We evaluate the superconducting fluctuation corrections to thermal conductivity in the normal state, which diverge as T approaches Tc. We find zero total contribution for one-, two- and three-dimensional superconductors for arbitrary impurity concentration. The method used is diagrammatic many-body theory, and all contributions—Aslamazov-Larkin (AL), Maki-Thompson (MT), and density of states (DOS)—are considered. The AL contribution is convergent, whilst the divergences of the DOS and MT diagrams exactly cancel.

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
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
DyBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pb-In Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown