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Thermodynamics of Quantum Hall Ferromagnets

Marcus Kasner·A. H. MacDonald
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Abstract

The two-dimensional interacting electron gas at Landau level filling factor $ν=1$ and temperature $T=0$ is a strong ferromagnet; all spins are completely aligned by arbitrarily weak Zeeman coupling. We report on a theoretical study of its thermodynamic properties using a many-body perturbation theory approach and concentrating on the recently measured temperature dependence of the spin magnetization. We discuss the interplay of collective and single-particle aspects of the physics and the opportunities for progress in our understanding of itinerant electron ferromagnetism presented by quantum Hall ferromagnets.

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Marcus Kasner, A. H. MacDonald. 1995-10-04. Thermodynamics of Quantum Hall Ferromagnets. https://doi.org/10.1103/physrevlett.76.3204

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