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	Polarization jumps across topological phase transitions in two-dimensional systems
	Yoshida, Hiroki; Zhang, Tiantian1; Murakami, Shuichi
刊名	PHYSICAL REVIEW B
	2023
卷号	108期号:7页码:75160
关键词	ELECTRIC POLARIZATION HALL SEMIMETAL MODEL
ISSN号	2469-9950
DOI	10.1103/PhysRevB.108.075160
英文摘要	In topological phase transitions involving a change in topological invariants such as the Chern number and the Z2 topological invariant, the gap closes, and the electric polarization becomes undefined at the transition. In this paper, we show that the jump of polarization across such topological phase transitions in two dimensions is described in terms of positions and monopole charges of Weyl points in the intermediate Weyl semimetal phase. We find that the jump of polarization is described by the Weyl dipole at Z2 topological phase transitions and at phase transitions without any change in the value of the Chern number. Meanwhile, when the Chern number changes at the phase transition, the jump is expressed in terms of the relative positions of Weyl points measured from a reference point in the reciprocal space.
学科主题	Materials Science ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/28053]
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, 2-12-1 Ookayama,Meguro Ku, Tokyo 1528551, Japan 2.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yoshida, Hiroki,Zhang, Tiantian,Murakami, Shuichi. Polarization jumps across topological phase transitions in two-dimensional systems[J]. PHYSICAL REVIEW B,2023,108(7):75160.
APA	Yoshida, Hiroki,Zhang, Tiantian,&Murakami, Shuichi.(2023).Polarization jumps across topological phase transitions in two-dimensional systems.PHYSICAL REVIEW B,108(7),75160.
MLA	Yoshida, Hiroki,et al."Polarization jumps across topological phase transitions in two-dimensional systems".PHYSICAL REVIEW B 108.7(2023):75160.

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