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Pu, S., Balram, A.C., Hu, Y. et al. (6 more authors) (2024) Fingerprints of composite fermion Lambda levels in scanning tunneling microscopy. Physical Review B, 110 (8). L081107. ISSN 2469-9950
Abstract
A composite fermion (CF) is a topological quasiparticle that emerges from a nonperturbative attachment of vortices to electrons in strongly correlated two-dimensional materials. Similar to noninteracting fermions that form Landau levels in a magnetic field, CFs can fill analogous “Lambda” levels, giving rise to the fractional quantum Hall (FQH) effect of electrons. Here, we show that Lambda levels can be directly visualized through the characteristic peak structure in the signal obtained via spectroscopy with scanning tunneling microscopy (STM) on a FQH state. Complementary to transport, which probes the low-energy properties of CFs, we show that high-energy features in STM spectra can be interpreted in terms of Lambda levels. We numerically demonstrate that STM spectra can be accurately modeled using Jain's CF theory. Our results show that STM provides a powerful tool for revealing the anatomy of FQH states and identifying physics beyond the noninteracting CF paradigm.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This item is protected by copyright. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) |
Funding Information: | Funder Grant number Leverhulme Trust RL-2019-015 Royal Society IES\R2\202052 |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Oct 2024 10:16 |
Last Modified: | 24 Oct 2024 12:41 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Identification Number: | 10.1103/physrevb.110.l081107 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:218546 |
Available Versions of this Item
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Fingerprints of Composite Fermion Lambda Levels in Scanning Tunneling Microscopy. (deposited 24 Oct 2024 12:49)
- Fingerprints of composite fermion Lambda levels in scanning tunneling microscopy. (deposited 18 Oct 2024 10:16) [Currently Displayed]