期刊
PHYSICAL REVIEW LETTERS
卷 117, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.206801
关键词
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资金
- Department of Energy, Office of Basic Energy Sciences [DE-SC0002140]
- Dahlem Research School (DRS) Postdoc Fellowship
- Alexander von Humboldt Research Fellowship
We investigate the disorder-driven phase transition from a fractional quantum Hall state to an Anderson insulator using quantum entanglement methods. We find that the transition is signaled by a sharp increase in the sensitivity of a suitably averaged entanglement entropy with respect to disorder-the magnitude of its disorder derivative appears to diverge in the thermodynamic limit. We also study the level statistics of the entanglement spectrum as a function of disorder. However, unlike the dramatic phase-transition signal in the entanglement entropy derivative, we find a gradual reduction of level repulsion only deep in the Anderson insulating phase.
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