Random flux manipulating topological phase transitions in Chern insulators

doi:10.1088/1674-1056/adc36a

中国物理B ›› 2025, Vol. 34 ›› Issue (6): 67301-067301.doi: 10.1088/1674-1056/adc36a

Random flux manipulating topological phase transitions in Chern insulators

Jinkun Wang(王锦坤)^1,2 and Wu-Ming Liu(刘伍明)^1,2,†

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2025-01-24 修回日期:2025-03-17 接受日期:2025-03-21 出版日期:2025-05-16 发布日期:2025-06-06
通讯作者: Wu-Ming Liu E-mail:wliu@iphy.ac.cn
基金资助:
We thank helpful discussion with Fadi Sun in Great Bay University. Project supported by the National Key Research and Development Program of China (Grant Nos. 2021YFA1400900, 2021YFA0718300, and 2021YFA1402100) and the National Natural Science Foundation of China (Grant Nos. 12174461, 12234012, 12334012, and 52327808).

Random flux manipulating topological phase transitions in Chern insulators

Jinkun Wang(王锦坤)^1,2 and Wu-Ming Liu(刘伍明)^1,2,†

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China

Received:2025-01-24 Revised:2025-03-17 Accepted:2025-03-21 Online:2025-05-16 Published:2025-06-06
Contact: Wu-Ming Liu E-mail:wliu@iphy.ac.cn
Supported by:
We thank helpful discussion with Fadi Sun in Great Bay University. Project supported by the National Key Research and Development Program of China (Grant Nos. 2021YFA1400900, 2021YFA0718300, and 2021YFA1402100) and the National Natural Science Foundation of China (Grant Nos. 12174461, 12234012, 12334012, and 52327808).

摘要/Abstract

摘要： We investigate the localization and topological properties of the Haldane model under the influence of random flux and Anderson disorder. Our localization analysis reveals that random flux induces a transition from insulating to metallic states, while Anderson localization only arises under the modulation of Anderson disorder. By employing real-space topological invariant methods, we demonstrates that the system undergoes topological phase transitions under different disorder manipulations, whereas random flux modulation uniquely induces topological Anderson insulator phases, with the potential to generate states with opposite Chern numbers. These findings highlight the distinct roles of disorder in shaping the interplay between topology and localization, providing insights into stabilizing topological states and designing robust topological quantum materials.

关键词: topological phase transitions, disorder system, Chern insulator

Abstract: We investigate the localization and topological properties of the Haldane model under the influence of random flux and Anderson disorder. Our localization analysis reveals that random flux induces a transition from insulating to metallic states, while Anderson localization only arises under the modulation of Anderson disorder. By employing real-space topological invariant methods, we demonstrates that the system undergoes topological phase transitions under different disorder manipulations, whereas random flux modulation uniquely induces topological Anderson insulator phases, with the potential to generate states with opposite Chern numbers. These findings highlight the distinct roles of disorder in shaping the interplay between topology and localization, providing insights into stabilizing topological states and designing robust topological quantum materials.

Key words: topological phase transitions, disorder system, Chern insulator

中图分类号: (Electron states at surfaces and interfaces)

73.20.-r

73.43.-f (Quantum Hall effects) 72.15.Rn (Localization effects (Anderson or weak localization)) 73.20.At (Surface states, band structure, electron density of states)

Jinkun Wang(王锦坤) and Wu-Ming Liu(刘伍明). Random flux manipulating topological phase transitions in Chern insulators[J]. 中国物理B, 2025, 34(6): 67301-067301.

Jinkun Wang(王锦坤) and Wu-Ming Liu(刘伍明). Random flux manipulating topological phase transitions in Chern insulators[J]. Chin. Phys. B, 2025, 34(6): 67301-067301.

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Random flux manipulating topological phase transitions in Chern insulators

Random flux manipulating topological phase transitions in Chern insulators

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