Disorder and the quantum Hall ferromagnet

Details Disorder and the quantum Hall ferromagnet Disorder and the quantum Hall ferromagnet

1998-01-30

arxiv.org/abs/cond-mat/9801324v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, latex, 10 pictures included in the text

Scientific paper

10.1103/PhysRevB.57.R9373

The distinguishing feature of the quantum Hall ferromagnet is the identity between the electrical and topological charge densities of a spin distortion. In addition to the wealth of physics associated with Skyrmionic excitations of the quantum Hall ferromagnet, this identification permits a rather curious coupling of spinwaves to the disorder potential. A wavepacket of spinwaves has an associated, oscillating dipole charge distribution, due to the non-linear form of the topological density. We investigate the way in which this coupling modifies the conductivity and temperature dependence of magnetization of the quantum Hall ferromagnet.

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