arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0705.2474cond-mat.mes-hallcond-mat.str-el
收藏

非周期任意子模型与分数量子霍尔效应

The Nonperiodic Anyon Model and the Fractional Quantum Hall Effect

Stefan Mashkevich, Stéphane Ouvry

摘要:

当考虑有限尺寸的附加通量管时,最低朗道能级任意子模型的统计参数变得非周期。有限尺寸效应导致临界填充因子和统计参数之间的反比关系在屏蔽制度中非周期性地继续,其中通量反平行于外部磁场-在临界填充时,外部磁场完全被与通量管相关的平均磁场屏蔽。提出了一种聚类参数来选择统计参数的特定值。用这种方法,得到了带隙非简并LL-任意子波函数的IQHE和IQHE填充。耆那教的系列被复制,而不需要填充更高的朗道水平。提出了新的Laughhe系列,特别是像Laughlin系列的粒子-空穴互补系列。对于快速旋转的玻色-爱因斯坦凝聚体,相应的聚类参数产生特定的分数填充序列。

英文摘要:

The lowest-Landau-level anyon model becomes nonperiodic in the statistics parameter when the finite size of the attached flux tubes is taken into account. The finite-size effects cause the inverse proportional relation between the critical filling factor and the statistics parameter to be nonperiodically continued in the screening regime, where the fluxes are anti-parallel to the external magnetic field -- at critical filling, the external magnetic field is entirely screened by the mean magnetic field associated with the flux tubes. A clustering argument is proposed to select particular values of the statistics parameter. In this way, IQHE and FQHE fillings are obtained in terms of gapped nondegenerate LLL-anyonic wave functions. Jain's series are reproduced without the need to populate higher Landau levels. New FQHE series are proposed, like, in particular, the particle-hole complementary series of the Laughlin one. For fast-rotating Bose-Einstein condensates, a corresponding clustering argument yields particular fractional filling series.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑