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arXiv · 2007.02827

Spin-flip excitations and Stoner ferromagnetism in a strongly correlated quantum Hall system

S. Dickmann·B. D. Kaysin
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Abstract

Spin-flip excitations in a quantum Hall electron system at fixed filling factor nu=2 are modelled and studied under conditions of a strong Coulomb interaction when the `Landau level mixing' is a dominant factor determining the excitation energy. The `one-exciton' approach used for the purely electronic excitations in question allows us to describe the Stoner transition from the unpolarized/paramgnet state to the polarized/ferromagnet one. The theoretical results are compared with the available experimental data.

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S. Dickmann, B. D. Kaysin. 2020-07-06. Spin-flip excitations and Stoner ferromagnetism in a strongly correlated quantum Hall system. https://doi.org/10.1103/physrevb.101.235317

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