典型文献
High-pressure study of topological semimetals XCd2Sb2(X=Eu and Yb)
文献摘要：
Topological materials have aroused great interest in recent years,especially when magnetism is involved.Pressure can effectively tune the topological states and possibly induce superconductivity.Here we report the high-pressure study of topological semimetals XCd2Sb2(X=Eu and Yb),which have the same crystal structure.In antiferromagnetic(AFM)Weyl semimetal EuCd2Sb2,the Néel temperature(TN)increases from 7.4 K at ambient pressure to 50.9 K at 14.9 GPa.When pressure is above 14.9 GPa,the AFM peak of resistance disappears,indicating a non-magnetic state.In paramag-netic Dirac semimetal candidate YbCd2Sb2,pressure-induced superconductivity appears at 1.94 GPa,then Tc reaches to a maximum of 1.67 K at 5.22 GPa and drops to zero at about 30 GPa,displaying a dome-shaped temperature-pressure phase diagram.High-pressure x-ray diffraction measurement demonstrates that a crystalline-to-amorphous phase transition occurs at about 16 GPa in YbCd2Sb2,revealing the robustness of pressure-induced superconductivity against structural instability.Similar structural phase transition may also occur in EuCd2Sb2,causing the disappearance of magnetism.Our results show that XCd2Sb2(X=Eu and Yb)is a novel platform for exploring the interplay among magnetism,topology,and superconductivity.
文献关键词：
中图分类号：
作者姓名：
Chuchu Zhu;Hao Su;Erjian Cheng;Lin Guo;Binglin Pan;Yeyu Huang;Jiamin Ni;Yanfeng Guo;Xiaofan Yang;Shiyan Li
作者机构：
State Key Laboratory of Surface Physics and Department of Physics,Fudan University,Shanghai 200438,China;School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing 210093,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China
文献出处：
引用格式：
[1]Chuchu Zhu;Hao Su;Erjian Cheng;Lin Guo;Binglin Pan;Yeyu Huang;Jiamin Ni;Yanfeng Guo;Xiaofan Yang;Shiyan Li-.High-pressure study of topological semimetals XCd2Sb2(X=Eu and Yb))[J].中国物理B（英文版）,2022(07):74-79
A类：
XCd2Sb2,EuCd2Sb2,paramag,YbCd2Sb2
B类：
High,pressure,study,topological,semimetals,Topological,materials,have,aroused,great,interest,recent,years,especially,when,magnetism,involved,Pressure,effectively,tune,states,possibly,superconductivity,Here,we,report,high,which,same,structure,In,antiferromagnetic,AFM,Weyl,temperature,TN,increases,from,ambient,GPa,When,above,peak,resistance,disappears,indicating,Dirac,candidate,induced,then,Tc,reaches,maximum,drops,zero,about,displaying,dome,shaped,phase,diagram,ray,diffraction,measurement,demonstrates,that,crystalline,amorphous,transition,occurs,revealing,robustness,against,structural,instability,Similar,may,also,causing,disappearance,Our,results,show,novel,platform,exploring,interplay,among,topology
AB值：
0.509616
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