Single Crystal Growth and Physical Property Characterization of Non-centrosymmetric Superconductor PbTaSe2

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 resist...

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Published in中国物理快报：英文版 no. 3; pp. 103 - 106
Main Author 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
Format Journal Article
LanguageEnglish
Published 01.03.2016
Subjects
单晶体
单晶生长
性质表征
物理
电子-声子耦合
超导体
超导性能
非中心对称
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307x/33/3/037401

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Summary: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.
Bibliography:11-1959/O4
Yu-Jia Long, Ling-Xiao Zhao, Pei-Pei Wang, Huai-Xin Yang, Jian-Qi Li, Hai Zi, Zhi-An Ren, Cong Ren, Gen-Fu Chen（1 Department of Physics, Renmin University of China, Beijing 100872;2National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190;a Collaborative Innovation Center of Advanced Microstructures, Beijing 100190）
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.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307x/33/3/037401