期刊
PHYSICAL REVIEW B
卷 82, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.235312
关键词
-
资金
- Microsoft Q
- Serbian Ministry of Science [141035]
- Agence Nationale de la Recherche [ANR-JCJC-0003-01]
Two-component fractional quantum Hall systems are providing a major motivation for a large section of the physics community. Here we study two-component fractional quantum Hall systems in spin-polarized half-filled lowest Landau level (filling factor 1/2) and second Landau level (filling factor 5/2) with exact diagonalization utilizing both the spherical and torus geometries. The two distinct two-component systems we consider are the true bilayer and effective bilayers (wide-quantum-well). In each model (bilayer and wide-quantum-well) we completely take into account interlayer tunneling and charge imbalancing terms. We find that in the half-filled lowest Landau level, the fractional quantum Hall effect (FQHE) is described by the two-component Abelian Halperin 331 state which is robust to charge imbalancing. In the half-filled second Landau, we find that the FQHE is likely described by the non-Abelian Moore-Read Pfaffian state which is also quite robust to charge imbalancing. Furthermore, we suggest the possibility of experimentally tuning from an Abelian to non-Abelian FQHE state in the second Landau level and comment on recent experimental studies of FQHE in wide-quantum-well structures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据