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| Evidence of topological insulator state in the semimetal LaBi | |
| Lou, R; Fu, BB; Xu, QN; Guo, PJ; Kong, LY; Zeng, LK; Ma, JZ; Richard, P; Fang, C; Huang, YB; Sun, SS; Wang, Q; Wang, L; Shi, YG; Lei, HC; Liu, K; Weng, HM; Qian, T; Ding, H; Wang, SC | |
| 2017 | |
| Source Publication | PHYSICAL REVIEW B
 |
| ISSN | 2469-9950 |
| Volume | 95Issue:11Pages:- |
| Subtype | 期刊论文 |
| Abstract | By employing angle-resolved photoemission spectroscopy combined with first-principles calculations, we performed a systematic investigation on the electronic structure of LaBi, which exhibits extremely large magnetoresistance (XMR), and is theoretically predicted to possess band anticrossing with nontrivial topological properties. Here, the observations of the Fermi-surface topology and band dispersions are similar to previous studies on LaSb [L.-K. Zeng, R. Lou, D.-S. Wu, Q.N. Xu, P.-J. Guo, L.-Y. Kong, Y.-G. Zhong, J.-Z. Ma, B.-B. Fu, P. Richard, P. Wang, G. T. Liu, L. Lu, Y.-B. Huang, C. Fang, S.-S. Sun, Q. Wang, L. Wang, Y.-G. Shi, H. M. Weng, H.-C. Lei, K. Liu, S.-C. Wang, T. Qian, J.-L. Luo, and H. Ding, Phys. Rev. Lett. 117, 127204 (2016)], a topologically trivial XMR semimetal, except the existence of a band inversion along the Gamma-X direction, with one massless and one gapped Dirac-like surface state at the X and Gamma points, respectively. The odd number of massless Dirac cones suggests that LaBi is analogous to the time-reversal Z(2) nontrivial topological insulator. These findings open up a new series for exploring novel topological states and investigating their evolution from the perspective of topological phase transition within the family of rare-earth monopnictides. |
| DOI | 10.1103/PhysRevB.95.115140 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000399216900001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/27318 |
| Collection | 中科院上海应用物理研究所2011-2018年 |
| Recommended Citation GB/T 7714 | Lou, R,Fu, BB,Xu, QN,et al. Evidence of topological insulator state in the semimetal LaBi[J]. PHYSICAL REVIEW B,2017,95(11):-. |
| APA | Lou, R.,Fu, BB.,Xu, QN.,Guo, PJ.,Kong, LY.,...&Wang, SC.(2017).Evidence of topological insulator state in the semimetal LaBi.PHYSICAL REVIEW B,95(11),-. |
| MLA | Lou, R,et al."Evidence of topological insulator state in the semimetal LaBi".PHYSICAL REVIEW B 95.11(2017):-. |
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| Evidence of topologi（2196KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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