Tuning the Charge Density Wave and Superconductivity in CuxTaS2

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dc.creatorWagner, K. E.
dc.creatorMorosan, E.
dc.creatorHor, Y. S.
dc.creatorTao, J.
dc.creatorZhu, Y.
dc.creatorSanders, T.
dc.creatorMcQueen, T. M.
dc.creatorZandbergen, H. W.
dc.creatorWilliams, A. J.
dc.creatorWest, D. V.
dc.creatorCava, R. J.
dc.date2008-08-15
dc.date.accessioned2026-07-07T12:40:15Z
dc.date.available2026-07-07T12:40:15Z
dc.descriptionWe report the characterization of layered, 2H-type CuxTaS2, for x between 0 and 0.12. The charge density wave (CDW), at 70 K for TaS2, is destabilized with Cu doping. The sub-1K superconducting transition in undoped 2H-TaS2 jumps quickly to 2.5 K at low x, increases to 4.5 K at the optimal composition Cu0.04TaS2, and then decreases at higher x. The electronic contribution to the specific heat, first increasing and then decreasing as a function of Cu content, is 12 mJ mol-1 K-2 at Cu0.04TaS2. Electron diffraction studies show that the CDW remains present at the optimal superconducting composition, but with both a changed q vector and decreased coherence length. We present an electronic phase diagram for the system.
dc.description7 pages, 9 figures. To be published in Physical Review B
dc.identifierhttps://arxiv.org/abs/0808.2147
dc.identifierhttp://arxiv.org/abs/0808.2147
dc.identifierPhys. Rev. B 78, 104520 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.104520
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219390
dc.subjectSuperconductivity
dc.titleTuning the Charge Density Wave and Superconductivity in CuxTaS2
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