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

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

1999-11-18

arxiv.org/abs/cond-mat/9911288v2

Phys. Rev. Lett. Vol 84, p 3946, (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Latex 4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.84.3946

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.

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