Multiband superconductivity in Ta4Pd3Te16 with anisotropic gap structure. (27th July 2015)

• Record Type: Journal Article
• Authors: Jiao, Wen-He; Liu, Yi; Li, Yu-Ke; Xu, Xiao-Feng; Bao, Jin-Ke; Feng, Chun-Mu; Li, S Y; Xu, Zhu-An; Cao, Guang-Han
• Is Part Of: Journal of physics. Volume 27:Number 32(2015)
• Publication Date: 2015-07-27
• Subjects: quasi-one-dimensional (Q1D) characteristics -- multiband superconductivity -- gap structure; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/27/32/325701
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We carried out measurements of the magnetoresistance, magnetic susceptibility and specific heat on crystals of the low-dimensional transition metal telluride Ta4 Pd3 Te16 . Our results indicate that Ta4 Pd3 Te16 is an anisotropic type-II superconductor in the clean limit with the extracted Ginzburg–Landau parameter 84. The upper critical field H c 2 ( T ) shows an anomalous temperature dependence at low temperatures and the anisotropy of H c 2 ( T ) is strongly T -dependent, both of which indicate a multiband scenario. The electronic specific heat ( T ) can be consistently described by a two-gap ( s + d waves) model from the base temperature up to . Our results suggest nodal and multiband superconductivity in Ta4 Pd3 Te16 .