Modulation Induced Phase Transition from Fractional Quantum Hall to Stripe State at ν=5/3

被引：3

作者：

Endo, Akira ^{[1
]}

Shibata, Naokazu ^{[2
]}

Iye, Yasuhiro ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2010年 / 79卷 / 10期

关键词：

fractional quantum Hall effect; stripe phase; potential modulation; density matrix renormalization group; two-dimensional electron gas; unidirectional lateral superlattice; HIGH LANDAU-LEVELS; UNIDIRECTIONAL LATERAL SUPERLATTICES; LEVEL FILLING FACTOR; MAGNETIC-FIELD; GROUND-STATE; ANISOTROPIC TRANSPORT; ELECTRONIC TRANSPORT; POTENTIAL MODULATION; 2D ELECTRONS; DIAGRAM;

D O I：

10.1143/JPSJ.79.103707

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the effect of unidirectional periodic potential modulation on the fractional quantum Hall (FQH) state at filling factors nu = 5/3 and 4/3. For large enough modulation amplitude, we find that the resistivity minimum at nu = 5/3 gives way to a peak that grows with decreasing temperature. Density matrix renormalization group calculation reveals that phase transition from FQH state to unidirectional striped state having a period similar to 4l (with l the magnetic length) takes place at nu = 1/3 (equivalent to nu = 5/3 by the particle-hole symmetry) with the increase of the modulation amplitude, suggesting that the observed peak is the manifestation of the stripe phase.

引用

页数：4

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