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Coulomb Correlations as the Root Cause of the Ferromagnetic Transition in a Quantum Hall State with Filling Factor v = 2

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

A study is preformed of the relationship between the spectrum of low-energy collective excitations in two-dimensional Fermi liquids and the paramagnet/ferromagnet phase transition in the quantum Hall state with filling factor v = 2. It is shown theoretically and experimentally that the softening of the energy of collective spin–flip excitations accompanies the spontaneous switching of the spin configuration of the system from the paramagnetic to the ferromagnetic phase.

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Funding

This work was performed as part of a State Task for the Russian Academy of Sciences’ Institute of Solid State Physics.

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Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    A. B. Vankov & I. V. Kukushkin

Authors
  1. A. B. Vankov
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  2. I. V. Kukushkin
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Corresponding author

Correspondence to A. B. Vankov.

Additional information

Translated by I. Obrezanova

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Vankov, A.B., Kukushkin, I.V. Coulomb Correlations as the Root Cause of the Ferromagnetic Transition in a Quantum Hall State with Filling Factor v = 2. Bull. Russ. Acad. Sci. Phys. 85, 154–158 (2021). https://doi.org/10.3103/S1062873821020271

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  • DOI: https://doi.org/10.3103/S1062873821020271

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