Topological Quantum Phase Transition and Superconductivity Induced by Pressure in the Bismuth Tellurohalide BiTeI

doi:10.1002/adma.201605965

	Topological Quantum Phase Transition and Superconductivity Induced by Pressure in the Bismuth Tellurohalide BiTeI
	Qi, Yanpeng 1; Shi, Wujun1,2 ; Naumov, Pavel G.1,3; Kumar, Nitesh 1; Sankar, Raman 4,5; Schnelle, Walter 1; Shekhar, Chandra 1; Chou, Fang-Cheng 5; Felser, Claudia 1; Yan, Binghai1,2,6 ; Medvedev, Sergey A.1
	2017-05-10
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
卷号	29 期号:18
发表状态	已发表
DOI	10.1002/adma.201605965
摘要	A pressure-induced topological quantum phase transition has been theoretically predicted for the semiconductor bismuth tellurohalide BiTeI with giant Rashba spin splitting. In this work, evolution of the electrical transport properties in BiTeI and BiTeBr is investigated under high pressure. The pressure-dependent resistivity in a wide temperature range passes through a minimum at around 3 GPa, indicating the predicted topological quantum phase transition in BiTeI. Superconductivity is observed in both BiTeI and BiTeBr, while resistivity at higher temperatures still exhibits semiconducting behavior. Theoretical calculations suggest that superconductivity may develop from the multivalley semiconductor phase. The superconducting transition temperature, T-c, increases with applied pressure and reaches a maximum value of 5.2 K at 23.5 GPa for BiTeI (4.8 K at 31.7 GPa for BiTeBr), followed by a slow decrease. The results demonstrate that BiTeX (X = I, Br) compounds with nontrivial topology of electronic states display new ground states upon compression.
收录类别	SCI ; EI
语种	英语
资助项目	European Research Council (ERC)[291472]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000400636400010
出版者	WILEY-V C H VERLAG GMBH
EI入藏号	20171003422456
EI主题词	Bismuth ; Bromine compounds ; Ground state ; High pressure engineering ; Phase transitions ; Superconducting transition temperature ; Superconductivity ; Topology
WOS关键词	AUGMENTED-WAVE METHOD ; TEMPERATURE ; SPIN ; EMERGENCE
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1375
专题	物质科学与技术学院_PI研究组_李刚组物质科学与技术学院_PI研究组_颜丙海组硬x射线自由电子激光装置项目
通讯作者	Yan, Binghai; Medvedev, Sergey A.
作者单位	1.Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 3.Russian Acad Sci, Shubnikov Inst Crystallog, Fed Sci Res Ctr Crystallog & Photon, Moscow 119333, Russia 4.Acad Sinica, Inst Phys, Taipei 10617, Taiwan 5.Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan 6.Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Qi, Yanpeng,Shi, Wujun,Naumov, Pavel G.,et al. Topological Quantum Phase Transition and Superconductivity Induced by Pressure in the Bismuth Tellurohalide BiTeI[J]. ADVANCED MATERIALS,2017,29(18).
APA	Qi, Yanpeng.,Shi, Wujun.,Naumov, Pavel G..,Kumar, Nitesh.,Sankar, Raman.,...&Medvedev, Sergey A..(2017).Topological Quantum Phase Transition and Superconductivity Induced by Pressure in the Bismuth Tellurohalide BiTeI.ADVANCED MATERIALS,29(18).
MLA	Qi, Yanpeng,et al."Topological Quantum Phase Transition and Superconductivity Induced by Pressure in the Bismuth Tellurohalide BiTeI".ADVANCED MATERIALS 29.18(2017).