Pressure-induced superconductivity in the Zintl topological insulator SrIn<sub>2</sub>As<sub>2</sub>

doi:10.1103/PhysRevB.108.224510

	Pressure-induced superconductivity in the Zintl topological insulator SrIn₂As₂
	Cao, Weizheng1 ; Yang, Haifeng1,2 ; Li, Yongkai 3,4; Pei, Cuiying1 ; Wang, Qi1,2 ; Zhao, Yi1 ; Li, Changhua1 ; Zhang, Mingxin1 ; Zhu, Shihao1 ; Wu, Juefei1 ; Zhang, Lili 5; Wang, Zhiwei 3,4; Yao, Yugui 3; Liu, Zhongkai1,2 ; Chen, Yulin1,2,6 ; Qi, Yanpeng1,2,7
	2023-12-15
发表期刊	PHYSICAL REVIEW B (IF:3.2[JCR-2023],3.3[5-Year])
ISSN	2469-9950
EISSN	2469-9969
卷号	108 期号:22
发表状态	已发表
DOI	10.1103/PhysRevB.108.224510
摘要	The Zintl compound AIn2X2 (A = Ca, Sr, and X = P, As), as a theoretically predicted nonmagnetic topological insulator, requires experiments to understand its electronic structure and topological characteristics. In this paper, we systematically investigate the crystal structures and electronic properties of the Zintl compound SrIn2As2 under both ambient and high-pressure conditions. By means of angle-resolved photoemission spectroscopy, we observe the overall band structures and "tails" of the topological surface states on the (001) surface that qualitatively agree well with ab initio calculations, thus suggesting SrIn2As2 as a topological insulator. Interestingly, application of pressure effectively tunes the crystal structure and electronic properties of SrIn2As2. Superconductivity is observed in SrIn2As2 for pressure where the temperature dependence of the resistivity changes from a semiconductinglike behavior to that of a metal. The observation of nontrivial topological states and pressure-induced superconductivity in SrIn2As2 provides crucial insights into the relationship between topology and superconductivity, and also stimulates further studies of superconductivity in topological materials.
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收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001141624000004
出版者	AMER PHYSICAL SOC
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/349865
专题	物质科学与技术学院物质科学与技术学院_PI研究组_柳仲楷组物质科学与技术学院_特聘教授组_陈宇林物质科学与技术学院_PI研究组_齐彦鹏组物质科学与技术学院_博士生物质科学与技术学院_公共科研平台_拓扑物理实验室
通讯作者	Cao, Weizheng; Liu, Zhongkai
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.ShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China 3.Beijing Inst Technol, Ctr Quantum Phys, Sch Phys, Key Lab Adv Optoelect Quantum Architecture & Measu, Beijing, Peoples R China 4.Beijing Inst Technol, Mat Sci Ctr, Yangtze Delta Reg Acad, Jiaxing 314011, Peoples R China 5.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201203, Peoples R China 6.Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England 7.ShanghaiTech Univ, Shanghai Key Lab High Resolut Electron Microscopy, Shanghai 201210, Peoples R China
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院; 上海科技大学
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Cao, Weizheng,Yang, Haifeng,Li, Yongkai,et al. Pressure-induced superconductivity in the Zintl topological insulator SrIn₂As₂[J]. PHYSICAL REVIEW B,2023,108(22).
APA	Cao, Weizheng.,Yang, Haifeng.,Li, Yongkai.,Pei, Cuiying.,Wang, Qi.,...&Qi, Yanpeng.(2023).Pressure-induced superconductivity in the Zintl topological insulator SrIn₂As₂.PHYSICAL REVIEW B,108(22).
MLA	Cao, Weizheng,et al."Pressure-induced superconductivity in the Zintl topological insulator SrIn₂As₂".PHYSICAL REVIEW B 108.22(2023).