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Investigation of Superconducting Properties and Possible Nematic Superconductivity in Self‐Doped BiCh2‐Based Superconductor CeOBiS1.7Se0.3
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2021-02-01 , DOI: 10.1002/pssr.202000546 Ryosuke Kiyama 1 , Kazuhisa Hoshi 1 , Yosuke Goto 1 , Yoshikazu Mizuguchi 1
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2021-02-01 , DOI: 10.1002/pssr.202000546 Ryosuke Kiyama 1 , Kazuhisa Hoshi 1 , Yosuke Goto 1 , Yoshikazu Mizuguchi 1
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The superconducting properties and possible nematic superconductivity of the self‐doped BiCh2‐based (Ch: S, Se) superconductor CeOBiS1.7Se0.3 are investigated through measurements of the in‐plane anisotropy of magnetoresistance (MR). Single crystals of CeOBiS1.7Se0.3 are grown using a flux method. The single‐crystal structural analysis reveals that the crystal structure at room temperature is tetragonal (P4/nmm). Bulk superconductivity with a transition temperature of 3.3 K is observed through electrical resistivity and magnetization measurements. Investigation of the anisotropy of the upper critical field suggests relatively low anisotropy in the crystal compared to that of other BiCh2‐based superconductors. In the superconducting states of CeOBiS1.7Se0.3, a twofold symmetric in‐plane anisotropy of MR is observed, which indicates the in‐plane rotational symmetry breaking in the superconducting states of CeOBiS1.7Se0.3.
中文翻译：
自掺杂BiCh2基超导体CeOBiS1.7Se0.3的超导性质和可能的向列超导性研究
通过测量磁阻（MR）的面内各向异性，研究了自掺杂BiCh 2基（Ch：S，Se）超导体CeOBiS 1.7 Se 0.3的超导性质和可能的向列超导性。使用助熔剂法生长CeOBiS 1.7 Se 0.3的单晶。单晶结构分析表明，室温下的晶体结构是四方的（P 4 / nmm）。通过电阻率和磁化强度测量，可以观察到转变温度为3.3 K的体超导性。上临界场的各向异性研究表明，与其他基于BiCh 2的超导体相比，晶体的各向异性相对较低。在CeOBiS 1.7 Se 0.3的超导状态下，观察到MR具有对称的两倍对称面内各向异性，这表明在CeOBiS 1.7 Se 0.3的超导状态下面内旋转对称性破裂。
更新日期：2021-04-08
中文翻译：
自掺杂BiCh2基超导体CeOBiS1.7Se0.3的超导性质和可能的向列超导性研究
通过测量磁阻（MR）的面内各向异性，研究了自掺杂BiCh 2基（Ch：S，Se）超导体CeOBiS 1.7 Se 0.3的超导性质和可能的向列超导性。使用助熔剂法生长CeOBiS 1.7 Se 0.3的单晶。单晶结构分析表明，室温下的晶体结构是四方的（P 4 / nmm）。通过电阻率和磁化强度测量，可以观察到转变温度为3.3 K的体超导性。上临界场的各向异性研究表明，与其他基于BiCh 2的超导体相比，晶体的各向异性相对较低。在CeOBiS 1.7 Se 0.3的超导状态下，观察到MR具有对称的两倍对称面内各向异性，这表明在CeOBiS 1.7 Se 0.3的超导状态下面内旋转对称性破裂。
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