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Microscopic details of stripes and bubbles in the quantum Hall regime
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Oswald, Josef and Roemer, Rudolf A. (2020) Microscopic details of stripes and bubbles in the quantum Hall regime. Physical Review B (Condensed Matter and Materials Physics), 102 (12). 121305(R). doi:10.1103/PhysRevB.102.121305 ISSN 1098-0121.
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Official URL: https://doi.org/10.1103/PhysRevB.102.121305
Abstract
We use a fully self-consistent laterally resolved Hartree-Fock approximation for numerically addressing the electron configurations at higher Landau levels in the quantum Hall regime for near-macroscopic sample sizes. At low disorder we find spatially resolved, stripe- and bubblelike charge-density modulations and show how these emerge depending on the filling factor. The microscopic details of these boundary regions determine the geometrical boundary conditions for aligning the charge-density modulation either as stripes or bubbles. Transport is modeled using a nonequilibrium network model giving a pronounced anisotropy in the direction of the injected current in the stripe regime close to half filling. We obtain a stripe period of 2.9 cyclotron radii. Our results provide an intuitive understanding of its consequences in strong magnetic fields and indicate the dominance of many particle physics in the integer quantum Hall regime.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QC Physics | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Library of Congress Subject Headings (LCSH): | Quantum Hall effect, Quantum theory | ||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 1098-0121 | ||||||
Official Date: | 15 September 2020 | ||||||
Dates: |
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Volume: | 102 | ||||||
Number: | 12 | ||||||
Article Number: | 121305(R) | ||||||
DOI: | 10.1103/PhysRevB.102.121305 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Copyright Holders: | © 2020 American Physical Society | ||||||
Date of first compliant deposit: | 21 January 2020 | ||||||
Date of first compliant Open Access: | 31 January 2020 | ||||||
RIOXX Funder/Project Grant: |
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