Abstract
We have investigated the effect of unidirectional periodic potential modulation on the fractional quantum Hall (FQH) state at filling factors v = 5/3 and 4/3. For large enough modulation amplitude, we find that the resistivity minimum at v = 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 ∼4l (with l the magnetic length) takes place at v = 1/3 (equivalent to v = 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.
| Original language | English |
|---|---|
| Article number | 103707 |
| Journal | journal of the physical society of japan |
| Volume | 79 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2010 Oct 1 |
Keywords
- Density matrix renormalization group
- Fractional quantum Hall effect
- Potential modulation
- Stripe phase
- Two-dimensional electron gas
- Unidirectional lateral superlattice
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Endo, A., Shibata, N., & Iye, Y. (2010). Modulation induced phase transition from fractional quantum hall to stripe state at v = 5/3. journal of the physical society of japan, 79(10), [103707]. https://doi.org/10.1143/JPSJ.79.103707