Magnetic phenomena at and near nu =1/2 and 1/4: theory, experiment and interpretation

Abstract

I show that the hamiltonian theory of Composite Fermions (CF) is capable of yielding a unified description in fair agreement with recent experiments on polarization P and relaxation rate 1/T_1 in quantum Hall states at filling nu = p/(2ps+1), at and near nu = 1/2 and 1/4, at zero and nonzero temperatures. I show how rotational invariance and two dimensionality can make the underlying interacting theory behave like a free one in a limited context.

Latex 4 pages, 2 figures

References in corpus (2)

• Activation gaps for the fractional quantum Hall effect: realistic treatment of transverse thickness
• A Composite Fermion Hofstader Problem: Partially Polarized Density Wave States in the 2/5 FQHE

Cited by in corpus (5)

• Hamiltonian theory of fractionally filled Chern bands
• Hamiltonian theory of gaps, masses and polarization in quantum Hall states: full disclosure
• Spin Transition in the Half-Filled Landau Level
• The $\nu =\frac{1}{2}$ Landau level: Half-full or half-empty?
• Finite Temperature Magnetism in Fractional Quantum Hall Systems: Composite Fermion Hartree-Fock and Beyond