Moiré assisted fractional quantum Hall state spectroscopy
Abstract
Intra-Landau level excitations in the fractional quantum Hall regime are not accessible via optical absorption measurements. Here we point out that optical probes are enabled by the periodic potentials produced by a moire pattern. Our observation is motivated by the recent observations of fractional quantum Hall incompressible states in moire-patterned graphene on a hexagonal boron nitride substrate, and is theoretically based on f-sum rule considerations supplemented by a perturbative analysis of the influence of the moire potential on many-body states.
- Authors:
-
- Univ. of Texas, Austin, TX (United States). Dept. of Physics; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Univ. of Texas, Austin, TX (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Welch Foundation
- OSTI Identifier:
- 1352619
- Alternate Identifier(s):
- OSTI ID: 1335727
- Grant/Contract Number:
- AC02-06CH11357; TBF1473
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 24; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Wu, Fengcheng, and MacDonald, A. H. Moiré assisted fractional quantum Hall state spectroscopy. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.94.241108.
Wu, Fengcheng, & MacDonald, A. H. Moiré assisted fractional quantum Hall state spectroscopy. United States. https://doi.org/10.1103/PhysRevB.94.241108
Wu, Fengcheng, and MacDonald, A. H. Wed .
"Moiré assisted fractional quantum Hall state spectroscopy". United States. https://doi.org/10.1103/PhysRevB.94.241108. https://www.osti.gov/servlets/purl/1352619.
@article{osti_1352619,
title = {Moiré assisted fractional quantum Hall state spectroscopy},
author = {Wu, Fengcheng and MacDonald, A. H.},
abstractNote = {Intra-Landau level excitations in the fractional quantum Hall regime are not accessible via optical absorption measurements. Here we point out that optical probes are enabled by the periodic potentials produced by a moire pattern. Our observation is motivated by the recent observations of fractional quantum Hall incompressible states in moire-patterned graphene on a hexagonal boron nitride substrate, and is theoretically based on f-sum rule considerations supplemented by a perturbative analysis of the influence of the moire potential on many-body states.},
doi = {10.1103/PhysRevB.94.241108},
journal = {Physical Review B},
number = 24,
volume = 94,
place = {United States},
year = {Wed Dec 14 00:00:00 EST 2016},
month = {Wed Dec 14 00:00:00 EST 2016}
}
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