Parallel and anti-parallel helical surface states for topological semimetals

doi:10.1038/s41598-023-36168-3

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Parallel and anti-parallel helical surface states for topological semimetals
	Zhang, Tiantian 1,2; Murakami, Shuichi 1
刊名	SCIENTIFIC REPORTS
	2023
卷号	13 期号:1 页码:9239
关键词	DIRAC SEMIMETAL DISCOVERY
ISSN号	2045-2322
DOI	10.1038/s41598-023-36168-3
英文摘要	Weyl points, carrying a Z-type monopole charge C, have bulk-surface correspondence (BSC) associated with helical surface states (HSSs). When \|C\|>1, multi-HSSs can appear in a parallel manner. However, when a pair of Weyl points carrying C = +/- 1 meet, a Dirac point carrying C = 0 can be obtained and the BSC vanishes. Nonetheless, a recent study in Zhang et al. (Phys Rev Res 4:033170, 2022) shows that a new BSC can survive for Dirac points when the system has time-reversal ( T)-glide ( G) symmetry ((similar to)(Theta) =TG), i.e., anti-parallel double/quad-HSSs associated with a new Z(2)-type monopole charge Q appear. In this paper, we systematically review and discuss both the parallel and anti-parallel multi-HSSs for Weyl and Dirac points, carrying two different kinds of monopole charges. Two material examples are offered to understand the whole configuration of multi-HSSs. One carries the Z(2)-type monopole charge C, showing both local and global topology for three kinds of Weyl points, and it leads to parallel multi-HSSs. The other carries the Z(2)-type monopole charge Q, only showing the global topology for (similar to)(Theta) -invariant Dirac points, and it is accompanied by anti-parallel multi-HSSs.
学科主题	Science & Technology - Other Topics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/28042]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan 2.Tokyo Inst Technol, Tokodai Inst Element Strategy, Midori Ku, Yokohama, Kanagawa 2268503, Japan 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Tiantian,Murakami, Shuichi. Parallel and anti-parallel helical surface states for topological semimetals[J]. SCIENTIFIC REPORTS,2023,13(1):9239.
APA	Zhang, Tiantian,&Murakami, Shuichi.(2023).Parallel and anti-parallel helical surface states for topological semimetals.SCIENTIFIC REPORTS,13(1),9239.
MLA	Zhang, Tiantian,et al."Parallel and anti-parallel helical surface states for topological semimetals".SCIENTIFIC REPORTS 13.1(2023):9239.