| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Bosonic Halperin (441) Fractional Quantum Hall Effect at Filling Factor $\nu=2/5$ |
| Tian-Sheng Zeng1†*, Liangdong Hu2,3†, and W. Zhu4 |
1Department of Physics, School of Physical Science and Technology, Xiamen University, Xiamen 361005, China
2Zhejiang University, Hangzhou 310027, China
3School of Science, Westlake University, Hangzhou 310024, China
4Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou 310024, China
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| Cite this article: |
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Tian-Sheng Zeng, Liangdong Hu, and W. Zhu 2022 Chin. Phys. Lett. 39 017301 |
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Abstract Quantum Hall effects with multicomponent internal degrees of freedom facilitate the playground of novel emergent topological orders. Here, we explore the correlated topological phases of two-component hardcore bosons at a total filling factor $\nu=2/5$ in topological lattice models under the interplay of intracomponent and intercomponent repulsions. We give the numerical demonstration of the emergence of Halperin (441) fractional quantum Hall effect based on exact diagonalization and density-matrix renormalization group methods. We elucidate its topological features including the degeneracy of the ground state, fractionally quantized topological Chern number matrix and chiral edge modes.
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Received: 06 October 2021
Editors' Suggestion
Published: 29 December 2021
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