Landau-Level Mixing and the Emergence of Pfaffian Excitations for the 5/2 Fractional Quantum Hall Effect

被引：94

作者：

Wojs, Arkadiusz ^{[1
,2
]}

Toke, Csaba ^{[3
]}

Jain, Jainendra K. ^{[4
]}

机构：

[1] Univ Cambridge, Cavendish Lab, TCM Grp, Cambridge CB3 0HE, England

[2] Wroclaw Univ Technol, Inst Phys, PL-50370 Wroclaw, Poland

[3] Univ Pecs, Inst Phys, H-7624 Pecs, Hungary

[4] Penn State Univ, Dept Phys, Davey Lab 104, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 09期

基金：

美国能源部;

关键词：

STATES;

D O I：

10.1103/PhysRevLett.105.096802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on exact diagonalization studies for fully spin polarized 5/2 fractional quantum Hall effect, incorporating Landau-level mixing through the Bishara-Nayak effective interaction. We find that there is an experimentally accessible region in the phase diagram where the Pfaffian model accurately describes not only the ground state but also the neutral and charged excitations. These results are consistent with the observed persistence of the 5/2 Hall effect down to very low magnetic fields; they are also relevant to the experimental attempts to detect non-Abelian braid statistics.

引用

页数：4

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