Single Crystal Growth and Physical Property Characterization of Non-centrosymmetric Superconductor PbTaSe_2  

作　　者：龙雨佳 赵凌霄 王培培 杨槐馨 李建奇 子海 任治安 任聪 陈根富 

机构地区：[1]Department of Physics,Renmin University of China [2]National Laboratory for Superconductivity,Institute of Physics and Beijing National Laboratory for Condensed Matter Physics,Chinese Academy of Sciences [3]Collaborative Innovation Center of Advanced Microstructures

出　　处：《Chinese Physics Letters》2016年第3期103-106,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant Nos 2015CB921303,2011CBA00100 and 2012CB821404;the Strategic Priority Research Program(B) of Chinese Academy of Sciences under Grant Nos XDB07020100and XDB07020200;the National Natural Science Foundation of China under Grant No 11174350

摘　　要：We report on the single crystal growth and superconducting properties of PbTaSe2 with the non-centrosymmetric crystal structure. By using the chemicM vapor transport technique, centimeter-size single crystals are success- fully obtained. The measurement of temperature dependence of electricaJ resistivity p（T） in both normal and superconducting states indicates a quasi-two-dimensional electronic state in contrast to that of polycrystalline samples. Specific heat C（T） measurement reveals a bulk superconductivity with Tc ≈ 3.75K and a specific heat jump ratio of 1.42. All these results are in agreement with a moderately electron-phonon coupled, type-g Bardeen-Cooper-Schrieffer superconductor.We report on the single crystal growth and superconducting properties of PbTaSe2 with the non-centrosymmetric crystal structure. By using the chemicM vapor transport technique, centimeter-size single crystals are success- fully obtained. The measurement of temperature dependence of electricaJ resistivity p（T） in both normal and superconducting states indicates a quasi-two-dimensional electronic state in contrast to that of polycrystalline samples. Specific heat C（T） measurement reveals a bulk superconductivity with Tc ≈ 3.75K and a specific heat jump ratio of 1.42. All these results are in agreement with a moderately electron-phonon coupled, type-g Bardeen-Cooper-Schrieffer superconductor.

关 键 词：of on in Single Crystal Growth and Physical Property Characterization of Non-centrosymmetric Superconductor PbTaSe2 IS that for BCS were been HIGH with 

分 类 号：O511.3[一般工业技术—材料科学与工程]