Combined Study of Structural, Magnetic and Transport Properties of Eu_(0.5)Ln_(0.5)BiS_(2)F Superconductor

作     者：Hui-Fei Zhai Bo Lin Pan Zhang Hao Jiang Yu-Ke Li Guang-Han Cao 翟会飞;林博;张攀;蒋好;李玉科;曹光旱

作者机构：Department of PhysicsNorthwest UniversityXVan 710127China Department of PhysicsZhejiang UniversityHangzhou 310027China School of Physics and OptoelectronicsXiangtan UniversityXiangtan 411105China Department of PhysicsHangzhou Normal UniversityHangzhou 310036China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2021年第38卷第4期

页      面：111-116页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(Grant No.11704311) the Natural Science Foundation of Shaanxi Provincial Department of Education(Grant No.17JK0772) the Natural Science Foundation of Shaanxi Province(Grant No.2018JQ1069) 

主　　题：resistivity compound Superconductor 

摘      要：Superconductivity below 0.3 K and a charge-density-wave-like(CDW-like) anomaly at 280 K were observed in EuBiS_(2)F *** we report a systematic study of structural and transport properties in Eu_(0.5)Ln_(0.5)BiS_(2)F(Ln=La,Ce,Pr,Nd,Sm) by electrical resistivity,magnetization,and specific heat *** lattice constants have a significant change upon rare earth substitution for Eu,suggesting an effective *** Ln is changed from Sm to La,the superconducting transition temperature T_(c) increases from 1.55 K to 2.8 *** contrast to the metallic parent compound,the temperature dependence of electrical resistivity displays semiconductinglike behavior for all the Eu_(0.5)Ln_(0.5)BiS_(2)F ***,the CDW-like anomaly observed in EuBiS2F is completely *** the mixed valence state in the undoped compound,Eu ions in these rareearth-doped samples are mainly divalent.A specific anomaly at 1.3 K resembling that in EuBiS_(2)F suggests the coexistence of superconductivity and spin glass state for Eu_(0.5)Ln_(0.5)BiS_(2)*** of ferromagnetic order and superconductivity is found below 2.2 K in Eu_(0.5)Ln_(0.5)BiS_(2)F *** results supplies a rich diagram showing that many interesting properties can be induced in BiS_(2)-based compounds.