Print Email Facebook Twitter Tuning the charge density wave and superconductivity in CuxTaS2 Title Tuning the charge density wave and superconductivity in CuxTaS2 Author Wagner, K.E. Morosan, E. Hor, Y.S. Tao, J. Zhu, Y. Sanders, T. McQueen, T.M. Zandbergen, H.W. Williams, A.J. West, D.V. Cava, R.J. Faculty Applied Sciences Department Kavli Institute of Nanoscience Date 2008-09-18 Abstract We report the characterization of layered 2H-type CuxTaS2 for 0?x?0.12. The charge density wave (CDW), at 70 K for TaS2, is destabilized with Cu doping. The sub-1 K 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. Subject charge density wavescopper compoundsdopingelectron diffractionphase diagramsspecific heatsuperconductivitytuning To reference this document use: http://resolver.tudelft.nl/uuid:6830f038-805d-4ced-a5ed-933c62e5901a Publisher American Physical Society ISSN 0163-1829 Source Physical Review B, 78 (10), 2008 Part of collection Institutional Repository Document type journal article Rights (c) 2008 The Author(s) ; American Physical Society Files PDF Zandbergen_2008.pdf 626.39 KB Close viewer /islandora/object/uuid:6830f038-805d-4ced-a5ed-933c62e5901a/datastream/OBJ/view