Thermodynamics of Quantum Hall Ferromagnets

Details Thermodynamics of Quantum Hall Ferromagnets Thermodynamics of Quantum Hall Ferromagnets

1995-10-04

arxiv.org/abs/cond-mat/9510021v1

Physics

Condensed Matter

REVTex, 10 pages, 3 uuencoded, compressed and tarred PostScript figures appended

Scientific paper

10.1103/PhysRevLett.76.3204

The two-dimensional interacting electron gas at Landau level filling factor $\nu =1$ 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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