Linear magnetoresistance and structural distortion in layered SrCu_(4-x)P_(2) single crystals  

作　　者：聂勇 陈正 韦文森 李慧杰 张勇 梅明 王园园 宋文海 宋东升 王钊胜 朱相德 宁伟 田明亮 Yong Nie;Zheng Chen;Wensen Wei;Huijie Li;Yong Zhang;Ming Mei;Yuanyuan Wang;Wenhai Song;Dongsheng Song;Zhaosheng Wang;Xiangde Zhu;Wei Ning;Mingliang Tian(Anhui Key Laboratory of Low-energy Quantum Materials and Devices,High Magnetic Field Laboratory,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;Department of Physics,University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Materials Physics,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;Information Materials and Intelligent Sensing Laboratory of Anhui Province,Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education,Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China;School of Physics,Anhui University,Hefei 230601,China)

机构地区：[1]Anhui Key Laboratory of Low-energy Quantum Materials and Devices,High Magnetic Field Laboratory,HFIPS,Chinese Academy of Sciences,Hefei 230031,China [2]Department of Physics,University of Science and Technology of China,Hefei 230026,China [3]Key Laboratory of Materials Physics,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China [4]Information Materials and Intelligent Sensing Laboratory of Anhui Province,Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education,Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China [5]School of Physics,Anhui University,Hefei 230601,China

出　　处：《Chinese Physics B》2024年第1期591-594,共4页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China (Grant Nos.2023YFA1607403,2021YFA1600201,and 2022YFA1602603);the Natural Science Foundation of China (Grant Nos.U19A2093,U2032214,and U2032163);the Collaborative Innovation Program of Hefei Science Center,CAS (Grant No.2019HSC-CIP 001);the Youth Innovation Promotion Association of CAS (Grant No.2021117);the Natural Science Foundation of Anhui Province (No.1908085QA15);the HFIPS Director’s Fund (Grant No.YZJJQY202304);the CASHIPS Director’s Fund (Grant No.YZJJ2022QN36);supported by the High Magnetic Field Laboratory of Anhui Province。

摘　　要：We report a systematic study on layered metal SrCu_(4-x)P_(2) single crystals via transport, magnetization, thermodynamic measurements and structural characterization. We find that the crystals show large linear magnetoresistance without any sign of saturation with a magnetic field up to 30T. We also observe a phase transition with significant anomalies in resistivity and heat capacity at T_(p)~140 K. Thermal expansion measurement reveals a subtle lattice parameter variation near Tp, i.e.,?L_(c)/L_(c)~0.062%. The structural characterization confines that there is no structure transition below and above T_(p). All these results suggest that the nonmagnetic transition of SrCu_(4-x)P_(2) could be associated with structural distortion.

关 键 词：linear magnetoresistance thermal expansion specific heat structural distortion 

分 类 号：O469[理学—凝聚态物理]