Polarization jumps across topological phase transitions in two-dimensional systems
文献类型：期刊论文
| 作者 | Yoshida, Hiroki; Zhang, Tiantian1; Murakami, Shuichi |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2023 |
| 卷号 | 108期号:7页码:75160 |
| ISSN号 | 2469-9950 |
| 关键词 | ELECTRIC POLARIZATION HALL SEMIMETAL MODEL |
| 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 |
| 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. |
入库方式： OAI收割
来源：理论物理研究所
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