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Electronic structure and spin-orbit coupling in ternary transition metal chalcogenides Cu2TlX (2) (X = Se, Te) | |
2022-03 | |
发表期刊 | CHINESE PHYSICS B (IF:1.5[JCR-2023],1.4[5-Year]) |
ISSN | 1674-1056 |
EISSN | 2058-3834 |
卷号 | 31期号:3 |
发表状态 | 已发表 |
DOI | 10.1088/1674-1056/ac3ecd |
摘要 | Ternary transition metal chalcogenides provide a rich platform to search and study intriguing electronic properties. Using angle-resolved photoemission spectroscopy and ab initio calculation, we investigate the electronic structure of Cu2TlX (2) (X = Se, Te), ternary transition metal chalcogenides with quasi-two-dimensional crystal structure. The band dispersions near the Fermi level are mainly contributed by the Te/Se p orbitals. According to our ab-initio calculation, the electronic structure changes from a semiconductor with indirect band gap in Cu2TlSe2 to a semimetal in Cu2TlTe2, suggesting a band-gap tunability with the composition of Se and Te. By comparing ARPES experimental data with the calculated results, we identify strong modulation of the band structure by spin-orbit coupling in the compounds. Our results provide a ternary platform to study and engineer the electronic properties of transition metal chalcogenides related to large spin-orbit coupling. |
关键词 | transition metal chalcogenides spin-orbit coupling electronic structure angle-resolved photoemission spectroscopy (ARPES) |
URL | 查看原文 |
收录类别 | SCI ; SCIE ; EI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[11774190] |
WOS研究方向 | Physics |
WOS类目 | Physics, Multidisciplinary |
WOS记录号 | WOS:000765541700001 |
出版者 | IOP Publishing Ltd |
引用统计 | 正在获取...
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文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/162940 |
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 |
通讯作者 | Chen, Yulin |
作者单位 | 1.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 2.Nanjing Univ, Dept Mat Sci & Engn, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 4.Chinese Acad Sci, Shanghai Sci Res Ctr, Shanghai 201210, Peoples R China 5.ShanghaiTech Lab Topol Phys, Shanghai 200031, Peoples R China 6.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China 7.Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England |
通讯作者单位 | 物质科学与技术学院; 上海科技大学 |
推荐引用方式 GB/T 7714 | Qin, Na,Du, Xian,Lv, Yangyang,et al. Electronic structure and spin-orbit coupling in ternary transition metal chalcogenides Cu2TlX (2) (X = Se, Te)[J]. CHINESE PHYSICS B,2022,31(3). |
APA | Qin, Na.,Du, Xian.,Lv, Yangyang.,Kang, Lu.,Yin, Zhongxu.,...&Chen, Yulin.(2022).Electronic structure and spin-orbit coupling in ternary transition metal chalcogenides Cu2TlX (2) (X = Se, Te).CHINESE PHYSICS B,31(3). |
MLA | Qin, Na,et al."Electronic structure and spin-orbit coupling in ternary transition metal chalcogenides Cu2TlX (2) (X = Se, Te)".CHINESE PHYSICS B 31.3(2022). |
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