Crystallization in the Fractional Quantum Hall Regime Induced by Landau-Level Mixing
Journal Article
·
· Physical Review Letters
- The Pennsylvania State Univ., University Park, PA (United States); Penn State University
- The Pennsylvania State Univ., University Park, PA (United States)
Here, the interplay between strongly correlated liquid and crystal phases for two-dimensional electrons exposed to a high transverse magnetic field is of fundamental interest. Through the non-perturbative fixed phase diffusion Monte Carlo method, we determine the phase diagram of the Wigner crystal in the ν – κ plane, where ν is the filling factor and κ is the strength of Landau level mixing. The phase boundary is seen to exhibit a striking ν dependence, with the states away from the magic filling factors ν = n/(2pn + 1) being much more susceptible to crystallization due to Landau level mixing than those at ν = n/(2pn + 1). Our results explain the qualitative difference between the experimental behaviors observed in n-doped and p-doped GaAs quantum wells, and, in particular, the existence of an insulating state for ν < 1/3 and also for 1/3 < ν < 2/5 in low density p-doped systems. We predict that in the vicinity of ν = 1/5 and ν = 2/9, increasing LL mixing causes a transition not into an ordinary electron Wigner crystal but rather into a strongly correlated crystal of composite fermions carrying two vortices.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0005042
- OSTI ID:
- 1489112
- Alternate ID(s):
- OSTI ID: 1469437
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 11 Vol. 121; ISSN 0031-9007; ISSN PRLTAO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Composite fermion liquid to Wigner solid transition in the lowest Landau level of zinc oxide
|
journal | October 2018 |
Similar Records
Landau-Level Mixing and Particle-Hole Symmetry Breaking for Spin Transitions in the Fractional Quantum Hall Effect
Wigner crystallization in the fractional quantum Hall regime: A variational quantum Monte Carlo study
Journal Article
·
Wed Sep 07 20:00:00 EDT 2016
· Physical Review Letters
·
OSTI ID:1489118
Wigner crystallization in the fractional quantum Hall regime: A variational quantum Monte Carlo study
Journal Article
·
Sun Jan 17 23:00:00 EST 1993
· Physical Review Letters; (United States)
·
OSTI ID:6905224