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Title: Morphing of two-dimensional hole systems at ν = 3 / 2 in parallel magnetic fields: Compressible, stripe, and fractional quantum Hall phases

Abstract

A transport study of two-dimensional (2D) holes confined to wide GaAs quantum wells provides a glimpse of a subtle competition between different many-body phases at a Landau level filling ν = 3/2 in tilted magnetic fields. At large tilt angles (θ), an anisotropic, stripe (or nematic) phase replaces the isotropic compressible Fermi sea at ν = 3/2 if the quantum well has a symmetric charge distribution. Furthermore, when the charge distribution is made asymmetric, instead of the stripe phase, an even-denominator fractional quantum state appears at ν = 3/2 in a range of large θ, and reverts back to a compressible state at even higher θ. We attribute this remarkable evolution to the significant mixing of the excited and ground-state Landau levels of 2D hole systems in tilted fields.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
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  1. Princeton Univ., NJ (United States)
Publication Date:
Research Org.:
Princeton Univ., NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Gordon and Betty Moore Foundation
OSTI Identifier:
1535778
Alternate Identifier(s):
OSTI ID: 1330484
Grant/Contract Number:  
FG02-00ER45841; DMR-130569; DMR-1420541; DMR-1157490; GBMF4420; FG02-00-ER45841
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 94; Journal Issue: 15; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; anisotropic magnetoresistance; charge density waves; composite fermions; fractional quantum Hall effect; Landau levels; quantum Hall effect; quantum phase transitions; semiconductors; spin-orbit coupling

Citation Formats

Liu, Yang, Mueed, M. A., Hossain, Md. Shafayat, Hasdermir, S., Pfeiffer, L. N., West, K. W., Baldwin, K. W., and Shayegan, M. Morphing of two-dimensional hole systems at ν=3/2 in parallel magnetic fields: Compressible, stripe, and fractional quantum Hall phases. United States: N. p., 2016. Web. doi:10.1103/physrevb.94.155312.
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Liu, Yang, Mueed, M. A., Hossain, Md. Shafayat, Hasdermir, S., Pfeiffer, L. N., West, K. W., Baldwin, K. W., & Shayegan, M. Morphing of two-dimensional hole systems at ν=3/2 in parallel magnetic fields: Compressible, stripe, and fractional quantum Hall phases. United States. https://doi.org/10.1103/physrevb.94.155312
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Liu, Yang, Mueed, M. A., Hossain, Md. Shafayat, Hasdermir, S., Pfeiffer, L. N., West, K. W., Baldwin, K. W., and Shayegan, M. Mon . "Morphing of two-dimensional hole systems at ν=3/2 in parallel magnetic fields: Compressible, stripe, and fractional quantum Hall phases". United States. https://doi.org/10.1103/physrevb.94.155312. https://www.osti.gov/servlets/purl/1535778.
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@article{osti_1535778,
title = {Morphing of two-dimensional hole systems at ν=3/2 in parallel magnetic fields: Compressible, stripe, and fractional quantum Hall phases},
author = {Liu, Yang and Mueed, M. A. and Hossain, Md. Shafayat and Hasdermir, S. and Pfeiffer, L. N. and West, K. W. and Baldwin, K. W. and Shayegan, M.},
abstractNote = {A transport study of two-dimensional (2D) holes confined to wide GaAs quantum wells provides a glimpse of a subtle competition between different many-body phases at a Landau level filling ν = 3/2 in tilted magnetic fields. At large tilt angles (θ), an anisotropic, stripe (or nematic) phase replaces the isotropic compressible Fermi sea at ν = 3/2 if the quantum well has a symmetric charge distribution. Furthermore, when the charge distribution is made asymmetric, instead of the stripe phase, an even-denominator fractional quantum state appears at ν = 3/2 in a range of large θ, and reverts back to a compressible state at even higher θ. We attribute this remarkable evolution to the significant mixing of the excited and ground-state Landau levels of 2D hole systems in tilted fields.},
doi = {10.1103/physrevb.94.155312},
journal = {Physical Review B},
number = 15,
volume = 94,
place = {United States},
year = {Mon Oct 31 00:00:00 EDT 2016},
month = {Mon Oct 31 00:00:00 EDT 2016}
}
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https://doi.org/10.1103/physrevb.94.155312
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    A cascade of phase transitions in an orbitally mixed half-filled Landau level
    journal, September 2018

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