Thermodynamics of Quantum Hall Ferromagnets

Abstract

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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References in corpus (6)

• Spontaneous Inter-layer Coherence in Double-Layer Quantum-Hall Systems I: Charged Vortices and Kosterlitz-Thouless Phase Transitions
• Evidence for Skyrmions and Single Spin Flips in the Integer Quantized Hall Effect
• Quantum Ferromagnetism and Phase Transitions in Double-Layer Quantum Hall Systems
• Evidence of Skyrmion excitations about $\nu =1$ in n-Modulation Doped Single Quantum Wells by Inter-band Optical Transmission
• Giant Low Temperature Heat Capacity of GaAs Quantum Wells near Landau Level Filling $\nu$=1
• Continuum quantum ferromagnets at finite temperature and the Quantum Hall effect

Cited by in corpus (15)

• Optically Pumped NMR Measurements of the Electron Spin Polarization in GaAs Quantum Wells near Landau Level Filling Factor nu=1/3
• Optical absorption to probe the quantum Hall ferromagnet at filling factor $\nu =1$
• 1/N expansion for two-dimensional quantum ferromagnets
• Magnons and skyrmions in fractional Hall ferromagnets
• Quantum Hall Spin Diode
• Hamiltonian Description of Composite Fermions: Magnetoexciton Dispersions
• Hopf term and the effective Lagrangian for the Skyrmions in a two-dimensional electron gas at small g-factor
• Spin Polarizations at and about the Lowest Filled Landau Level
• Itinerant Electron Ferromagnetism in the Quantum Hall Regime
• No End of Tricks: Electrons in the Fractional Quantum Hall Regime
• Finite Temperature Magnetism in Fractional Quantum Hall Systems: Composite Fermion Hartree-Fock and Beyond
• Time, momentum, and energy resolved pump-probe tunneling spectroscopy of two-dimensional electron systems
• Effect of the Equivalence Between Topological and Electric Charge on the Magnetization of the Hall Ferromagnet
• Tunneling density of states, correlation energy, and spin polarization in the fractional quantum Hall regime
• Electronic correlation in the quantum Hall regime