Doping dependence of the superconducting gap in Tl_2Ba_2CuO_{6+delta} from heat transport

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dc.creatorHawthorn, D. G.
dc.creatorLi, S. Y.
dc.creatorSutherland, M.
dc.creatorBoaknin, Etienne
dc.creatorHill, R. W.
dc.creatorProust, C.
dc.creatorRonning, F.
dc.creatorTanatar, M. A.
dc.creatorPaglione, Johnpierre
dc.creatorTaillefer, Louis
dc.creatorPeets, D.
dc.creatorLiang, Ruixing
dc.creatorBonn, D. A.
dc.creatorHardy, W. N.
dc.creatorKolesnikov, N. N.
dc.date2005-02-11
dc.date2007-04-02
dc.date.accessioned2026-07-07T07:54:37Z
dc.date.available2026-07-07T07:54:37Z
dc.descriptionWe present low-temperature thermal conductivity measurements on the cuprate Tl_2Ba_2CuO_{6+delta} throughout the overdoped regime. In the T -> 0 limit, the thermal conductivity due to d-wave nodal quasiparticles provides a bulk measurement of the superconducting gap, Delta. We find Delta to decrease with increasing doping, with a magnitude consistent with spectroscopic measurements (photoemission and tunneling). This argues for a pure and simple d-wave superconducting state in the overdoped region of the phase diagram, which appears to extend into the underdoped regime down to a hole concentration of 0.1 hole/Cu. As hole concentration is decreased, the gap-to-Tc ratio increases, showing that the suppression of the superconducting transition temperature Tc (relative to the gap) begins in the overdoped regime.
dc.description7 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0502273
dc.identifierhttp://arxiv.org/abs/cond-mat/0502273
dc.identifierPhys. Rev. B 75, 104518 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.104518
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126679
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleDoping dependence of the superconducting gap in Tl_2Ba_2CuO_{6+delta} from heat transport
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