期刊
PHYSICAL REVIEW B
卷 94, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.075108
关键词
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资金
- Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung
- National Centre of Compentence in Research - Quantum Science and Technology
- European Research Council
- ERC Advanced Grant SIMCOFE
- Microsoft Research
- National Science Foundation [DMR-1508290]
- Office of Research and Sponsored Programs at California State University Long Beach
- W. M. Keck Foundation
- LPS-MPO-CMTC
- Swiss National Supercomputing Centre (CSCS) [s395, s551]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1508290] Funding Source: National Science Foundation
We numerically study the fractional quantum Hall effect at filling factors nu = 12/5 and 13/5 (the particle-hole conjugate of 12/5) in high-quality two-dimensional GaAs heterostructures via exact diagonalization including finite well width and Landau-level mixing. We find that Landau-level mixing suppresses the nu = 3/5 fractional quantum Hall effect relative to nu = 12/5. By contrast, we find both nu = 2/5 and (its particle-hole conjugate) nu = 3/5 fractional quantum Hall effects in the lowest Landau level to be robust under Landau-level mixing and finite well-width corrections. Our results provide a possible explanation for the experimental absence of the 13/5 fractional quantum Hall state as caused by Landau-level mixing effects.
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