Observation of new plasmons in the fractional quantum Hall effect: Interplay of topological and nematic orders
Abstract
Collective modes of exotic quantum fluids reveal underlying physical mechanisms responsible for emergent quantum states. We observe unexpected new collective modes in the fractional quantum Hall (FQH) regime: intra–Landau-level plasmons measured by resonant inelastic light scattering. The plasmons herald rotational-symmetry-breaking (nematic) phases in the second Landau level and uncover the nature of long-range translational invariance in these phases. The intricate dependence of plasmon features on filling factor provides insights on interplays between topological quantum Hall order and nematic electronic liquid crystal phases. A marked intensity minimum in the plasmon spectrum at Landau level filling factorv= 5/2 strongly suggests that this paired state, which may support non-Abelian excitations, overwhelms competing nematic phases, unveiling the robustness of the 5/2 superfluid state for small tilt angles. Atv= 7/3, a sharp and strong plasmon peak that links to emerging macroscopic coherence supports the proposed model of a FQH nematic state.
- Authors:
-
- Columbia Univ., New York, NY (United States
- Technische Univ. Munech, Garching (Germany); Univ. of Munster (Germany)
- Princeton Univ., NJ (United States)
- Purdue Univ., West Lafayette, IN (United States)
- Purdue Univ., West Lafayette, IN (United States); School of Materials Engineering and School of Electrical and Computer Engineering, IN (United States)
- Publication Date:
- Research Org.:
- Purdue Univ., West Lafayette, IN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF); Gordon and Betty Moore Foundation
- OSTI Identifier:
- 1610885
- Grant/Contract Number:
- SC0006671; DMR-1306976; GBMF4420; DMR 1420541
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Science Advances
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 3; Journal ID: ISSN 2375-2548
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Science & Technology - Other Topics
Citation Formats
Du, Lingjie, Wurstbauer, Ursula, West, Ken W., Pfeiffer, Loren N., Fallahi, Saeed, Gardner, Geoff C., Manfra, Michael J., and Pinczuk, Aron. Observation of new plasmons in the fractional quantum Hall effect: Interplay of topological and nematic orders. United States: N. p., 2019.
Web. doi:10.1126/sciadv.aav3407.
Du, Lingjie, Wurstbauer, Ursula, West, Ken W., Pfeiffer, Loren N., Fallahi, Saeed, Gardner, Geoff C., Manfra, Michael J., & Pinczuk, Aron. Observation of new plasmons in the fractional quantum Hall effect: Interplay of topological and nematic orders. United States. https://doi.org/10.1126/sciadv.aav3407
Du, Lingjie, Wurstbauer, Ursula, West, Ken W., Pfeiffer, Loren N., Fallahi, Saeed, Gardner, Geoff C., Manfra, Michael J., and Pinczuk, Aron. Fri .
"Observation of new plasmons in the fractional quantum Hall effect: Interplay of topological and nematic orders". United States. https://doi.org/10.1126/sciadv.aav3407. https://www.osti.gov/servlets/purl/1610885.
@article{osti_1610885,
title = {Observation of new plasmons in the fractional quantum Hall effect: Interplay of topological and nematic orders},
author = {Du, Lingjie and Wurstbauer, Ursula and West, Ken W. and Pfeiffer, Loren N. and Fallahi, Saeed and Gardner, Geoff C. and Manfra, Michael J. and Pinczuk, Aron},
abstractNote = {Collective modes of exotic quantum fluids reveal underlying physical mechanisms responsible for emergent quantum states. We observe unexpected new collective modes in the fractional quantum Hall (FQH) regime: intra–Landau-level plasmons measured by resonant inelastic light scattering. The plasmons herald rotational-symmetry-breaking (nematic) phases in the second Landau level and uncover the nature of long-range translational invariance in these phases. The intricate dependence of plasmon features on filling factor provides insights on interplays between topological quantum Hall order and nematic electronic liquid crystal phases. A marked intensity minimum in the plasmon spectrum at Landau level filling factorv= 5/2 strongly suggests that this paired state, which may support non-Abelian excitations, overwhelms competing nematic phases, unveiling the robustness of the 5/2 superfluid state for small tilt angles. Atv= 7/3, a sharp and strong plasmon peak that links to emerging macroscopic coherence supports the proposed model of a FQH nematic state.},
doi = {10.1126/sciadv.aav3407},
journal = {Science Advances},
number = 3,
volume = 5,
place = {United States},
year = {Fri Mar 22 00:00:00 EDT 2019},
month = {Fri Mar 22 00:00:00 EDT 2019}
}
Web of Science
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