| Title | Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi2Te2Se and Bi2Se2Te |
| Author | |
| Corresponding Author | Cheng, Hu; Li, Yanchun |
| Publication Years | 2022-08-01
|
| DOI | |
| Source Title | |
| ISSN | 1477-9226
|
| EISSN | 1477-9234
|
| Volume | 51Pages:14630-14638 |
| Abstract | Over the past decade, external pressure has been found to play an important role in modulating the structures and properties of sesqui-chalcogenides, but several key puzzles still remain to be solved. In this work, pressure-induced structural phase transitions, alloying and topological superconductivity in the ternary tetradymites Bi2Te2Se and Bi2Se2Te were investigated via in situ high-pressure angle-dispersive X-ray diffraction and resistance measurements. Both of them transform from the layered rhombohedral R3m structure to a 7-fold monoclinic C2/m phase, then to an 8-fold monoclinic C2/c structure, and eventually to a bcc alloy, which are quite different from previous work, but similar to the transitions in Bi2Te3. The superconductivity was found in the rhombohedral structure of Bi2Se2Te with T-c approximate to 2.2 K at 4.3 GPa, which should be related to the topological quantum transition. Furthermore, the atomic size and element electronegativity were discovered to have a significant effect on the alloying and amorphization of these compounds. |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | Others
|
| Funding Project | National Natural Science Foundation of China[12104457]
|
| WOS Research Area | Chemistry
|
| WOS Subject | Chemistry, Inorganic & Nuclear
|
| WOS Accession No | WOS:000852668400001
|
| Publisher | |
| EI Accession Number | 20224513067016
|
| EI Keywords | Alloying
; Bismuth
; Bismuth alloys
; Chalcogenides
; Chemical bonds
; Crystal structure
; Electronegativity
; Topology
|
| ESI Classification Code | Metallurgy:531.1
; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3
; Physical Chemistry:801.4
; Electrochemistry:801.4.1
; Inorganic Compounds:804.2
; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4
; Crystal Lattice:933.1.1
|
| ESI Research Field | CHEMISTRY
|
| Data Source | Web of Science
|
| Citation statistics |
Cited Times [WOS]:0
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/401565 |
| Department | Department of Physics |
| Affiliation | 1.Chinese Acad Sci, Multidisciplinary Res Ctr, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China |
| Recommended Citation GB/T 7714 |
Cheng, Hu,Xu, Yixuan,Zhou, Xuefeng,et al. Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi2Te2Se and Bi2Se2Te[J]. DALTON TRANSACTIONS,2022,51:14630-14638.
|
| APA |
Cheng, Hu.,Xu, Yixuan.,Zhou, Xuefeng.,Gong, Yu.,Yang, Dongliang.,...&Li, Yanchun.(2022).Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi2Te2Se and Bi2Se2Te.DALTON TRANSACTIONS,51,14630-14638.
|
| MLA |
Cheng, Hu,et al."Pressure-induced structural transitions, alloying and superconductivity in topological insulators Bi2Te2Se and Bi2Se2Te".DALTON TRANSACTIONS 51(2022):14630-14638.
|
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