Superconducting gap symmetry of the BiS_2-based superconductor LaO_(0.5)sF_(0.5)BiSSe elucidated through specific heat measurements

Naoki Kase; Yusuke Terui; Tomohito Nakano; Naoya Takeda

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Superconducting gap symmetry of the BiS_2-based superconductor LaO_(0.5)sF_(0.5)BiSSe elucidated through specific heat measurements

机译：通过比热测量阐明基于BiS_2的超导体LaO_（0.5）sF_（0.5）BiSSe的超导间隙对称性

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In this study, the superconducting gap symmetry of LaO_(0.5)F_(0.5)BiSSe is elucidated through specific heat measurements with one single crystal of LaO_(0.5)sF_(0.5)BiSSe. A clear jump is observed at 3.95 K in LaO_(0.5)sF_(0.5)BiSSe, suggesting bulk superconductivity. From specific heat measurements, ∆C_e/γT_c and 2∆(0)/k_BT_c are obtained as 2.31 and 4.5. These values indicate strong electron-phonon coupling superconductivity. The temperature (T) and magnetic-field (H) dependence of the electronic specific heat C_e(T,H) suggests that superconductivity is fully gapped. Our handmade system successfully elucidates superconducting gap symmetry of the BiS_2-based compound with a small single crystal.

机译：在这项研究中，LaO_（0.5）F_（0.5）BiSSe的超导能隙对称性通过LaO_（0.5）sF_（0.5）BiSSe的单晶的比热测量得以阐明。在LaO_（0.5）sF_（0.5）BiSSe中的3.95 K处观察到明显的跃迁，表明体超导性。从比热测量得出，ΔC_e/γT_c和2Δ（0）/ k_BT_c为2.31和4.5。这些值表明强电子-声子耦合超导性。电子比热C_e（T，H）对温度（T）和磁场（H）的依赖性表明，超导性是完全可以实现的。我们的手工系统成功地阐明了BiS_2基化合物与小单晶的超导间隙对称性。

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《Physical review》 |2017年第21期|214506.1-214506.5|共5页
作者
Naoki Kase; Yusuke Terui; Tomohito Nakano; Naoya Takeda;
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Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan;

Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan;

Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan;

Department of Materials Science, Niigata University, Niigata 950-2181, Japan;

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1. Superconducting gap symmetry of the BiS_2-based superconductor LaO_(0.5)F_(0.5)BiSSe elucidated through specific heat measurements [J] . Naoki Kase, Yusuke Terui, Tomohito Nakano, Physical Review. B, Condensed Matter . 2017,第21a22CD期

机译：通过特定热测量阐明的基于BIS_2的超导体的基于BIS_2的超导体的超导（0.5）F_（0.5）的超导间隙对称性
2. Stabilization of High-Tc Phase of BiS_2-Based Superconductor LaO_(0.5)F_(0.5)BiS_2 Using High-Pressure Synthesis [J] . Yoshikazu Mizuguchi, Takafumi Hiroi, Joe Kajitani, Journal of the Physical Society of Japan . 2014,第5期

机译：高压合成法稳定BiS_2基超导体LaO_（0.5）F_（0.5）BiS_2的高Tc相
3. Superconducting gap structure in ambient-pressure-grown LaO_(0.5)F_(0.5)BiS_2 [J] . Jian Zhang, K. Huang, Z. F. Ding, Physical Review. B, Condensed Matter . 2016,第22期

机译：常压生长的LaO_（0.5）F_（0.5）BiS_2中的超导间隙结构
4. Study of Transport and Magnetic Properties in New BiS_2 Based Layered LaO_(0.5)F_(0.5)BiS_2 Superconductor [C] . Shruti, Anuj Kumar, Rajveer Jha, DAE Solid State Physics Symposium . 2014

机译：基于BIS_2的分层LAO_（0.5）F_（0.5）BIS_2超导体的运输和磁性研究
5. An investigation on the processing and characterization of (thallium(0.5 - x) lead(0.5 - x) europium(2x)) strontium(2 - y) barium(y) calcium(2) copper(3) oxygen(z) high-temperature superconductor to determine the optimum barium concentration and study the effects of doping europium in thallium and lead sites. [D] . Ju, Zifan. 1996

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6. Quantum criticality at the superconductor-insulator transition revealed by specific heat measurements [O] . S. Poran, T. Nguyen-Duc, A. Auerbach, -1

机译：通过比热测量揭示超导体-绝缘体转变处的量子临界性
7. Superconducting gap symmetry of the BiS$_2$-based superconductor LaO$_{0.5}$F$_{0.5}$BiSSe elucidated through specific heat measurement [O] . Kase, Naoki, Terui, Yusuke, Nakano, Tomohito, 2018

机译：基于Bis $ _2 $的超导体的超导间隙对称性通过特定的热量测量来阐明LaO $ _ {0.5} $ F $ _ {0.5} $ Bisse

Superconducting gap symmetry of the BiS_2-based superconductor LaO_(0.5)sF_(0.5)BiSSe elucidated through specific heat measurements

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