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Continuum quantum ferromagnets at finite temperature and the Quantum Hall effect

N. Read·Subir Sachdev
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Abstract

We study finite temperature ($T$) properties of the continuum quantum field theory of systems with a ferromagnetic ground state. A scaling theory of the $T=0$ system is discussed carefully, and its consequences for crossovers between different finite $T$ regimes in dimensions 1, 2, and 3 are described. The results are compared with recent NMR measurements of the magnetization of a quantum Hall system with filling factor $ν=1$; we predict that the relaxation rate $1/T_1$ of this system may have a finite $T$ ``ferromagnetic coherence peak''.

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N. Read, Subir Sachdev. 1995-07-24. Continuum quantum ferromagnets at finite temperature and the Quantum Hall effect. https://doi.org/10.1103/physrevlett.75.3509

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