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2025 Volume 34 Issue 6

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Jinkun Wang(王锦坤) and Wu-Ming Liu(刘伍明). 2025: Random flux manipulating topological phase transitions in Chern insulators, Chinese Physics B, 34(6): 067301. doi: 10.1088/1674-1056/adc36a

Citation:

Jinkun Wang(王锦坤) and Wu-Ming Liu(刘伍明). 2025: Random flux manipulating topological phase transitions in Chern insulators, Chinese Physics B, 34(6): 067301. doi: 10.1088/1674-1056/adc36a

Random flux manipulating topological phase transitions in Chern insulators

Jinkun Wang(王锦坤) 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 Date: 24/01/2025
Accepted Date: 17/03/2025
Fund Project:
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).
PACS: 73.20.-r; 73.43.-f; 72.15.Rn; 73.20.At

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.
- topological phase transitions,
- disorder system,
- Chern insulator

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Random flux manipulating topological phase transitions in Chern insulators

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

Received Date: 24/01/2025
Accepted Date: 17/03/2025

Fund Project:

Key words:

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.

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