Bulk Fermi surface of the layered superconductor TaSe3 with three-dimensional strong topological state
Bulk Fermi surface of the layered superconductor TaSe3 with three-dimensional strong topological state
复制标题
三维强拓扑态层状超导体TaSe3体费米面
DOI：
10.1103/physrevb.101.155117
复制
发表时间：
2019-12
影响因子：
3.7
通讯作者：
Guo Yanfeng
中科院分区：
文献类型：
--
作者：
Xia Wei;Shi Xianbiao;Zhang Yong;Su Hao;Wang Qin;Ding Linchao;Chen Leiming;Wang Xia;Zou Zhiqiang;Yu Na;Pi Li;Hao Yufeng;Li Bin;Zhu Zengwei;Zhao Weiwei;Kou Xufeng;Guo Yanfeng
High-magnetic-field transport measurements and ab initio calculations on the layered superconductor TaSe3 have provided evidence for the existence of a three-dimensional strong topological state. Longitudinal magnetotransport measurements up to similar to 33 T unveiled striking Shubnikov-de Haas oscillations with two fundamental frequencies at 100 and 175 T corresponding to a nontrivial hole Fermi pocket at the Gamma point and a nontrivial electron Fermi pocket at the B point, respectively, in the Brillouin zone. However, calculations revealed one more electron pocket at the B point which was not detected by the magnetotransport measurements, presumably due to the limited carrier momentum relaxation time. Angle-dependent quantum oscillations by rotating the sample with respect to the magnetic field revealed clear changes in the two fundamental frequencies, indicating anisotropic electronic Fermi pockets. The ab initio calculations gave the topological Z(2) invariant of (1; 100) and revealed a single Dirac cone on the (1 0 -1) surface at the (X) over bar point with helical spin texture at a constant energy contour, suggesting a strong topological state. The results demonstrate TaSe3 as an excellent platform to study the interplay between the topological phase and superconductivity and a promising system for the exploration of topological superconductivity.
登录
查看更多内容
影响因子：
4.5
作者：
Suneel Kumar Srivastava;B. N. Avasthi
通讯作者：
Suneel Kumar Srivastava;B. N. Avasthi
TaSe3 介观线中电荷密度波跃迁的观察
影响因子：
4
作者：
Yang J;Wang Y Q;Zhang R R;Ma L;Liu W;Qu Z;Zhang L;Zhang S L;Tong W;Pi L;Zhu W K;Zhang C J
通讯作者：
Zhang C J
DOI：
10.1016/0370-1573(85)90073-0
发表时间：
1985-03
期刊：
Physics Reports
影响因子：
--
作者：
G. Grüner;A. Zettl
通讯作者：
G. Grüner;A. Zettl
影响因子：
8.6
作者：
Kuan-Wen Chen;X. Lian;Y. Lai;N. Aryal;Y. Chiu;W. Lan;D. Graf;E. Manousakis;R. Baumbach;L. Balicas
通讯作者：
Kuan-Wen Chen;X. Lian;Y. Lai;N. Aryal;Y. Chiu;W. Lan;D. Graf;E. Manousakis;R. Baumbach;L. Balicas
影响因子：
3.4
作者：
Kim, Bum Jun;Jeong, Byung Joo;Choi, Jae-Young
通讯作者：
Choi, Jae-Young