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Anomalous magnons in quantum Hall ferromagnet with strong interaction at filling factor 2
- Authors: Vankov A.B.1, Koreyev A.S.1, Berezhnoy P.S.1, Kukushkin I.V.1
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Affiliations:
- Institute of Solid State Physics of the Russian Academy of Sciences
- Issue: Vol 87, No 2 (2023)
- Pages: 158-162
- Section: Articles
- URL: https://ogarev-online.ru/0367-6765/article/view/135265
- DOI: https://doi.org/10.31857/S0367676522700296
- EDN: https://elibrary.ru/ADSDIJ
- ID: 135265
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Abstract
In two-dimensional electronic systems, at large values of the Wigner–Seitz parameter, an anomalous branch of magnons was found. In a quantum Hall ferromagnet state with ν = 2, the magnon dispersion reveals a magnetoroton minimum with depth dependent on electron density. Magnetorotons with opposite momenta are shown to attract each other.
About the authors
A. B. Vankov
Institute of Solid State Physics of the Russian Academy of Sciences
Author for correspondence.
Email: vankov@issp.ac.ru
Russia, 142432, Chernogolovka
A. S. Koreyev
Institute of Solid State Physics of the Russian Academy of Sciences
Email: vankov@issp.ac.ru
Russia, 142432, Chernogolovka
P. S. Berezhnoy
Institute of Solid State Physics of the Russian Academy of Sciences
Email: vankov@issp.ac.ru
Russia, 142432, Chernogolovka
I. V. Kukushkin
Institute of Solid State Physics of the Russian Academy of Sciences
Email: vankov@issp.ac.ru
Russia, 142432, Chernogolovka
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