Effective Action Studies of Quantum Hall Spin Textures

Details Effective Action Studies of Quantum Hall Spin Textures Effective Action Studies of Quantum Hall Spin Textures

1998-09-21

arxiv.org/abs/cond-mat/9809267v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 10 figures

Scientific paper

10.1103/PhysRevB.59.10183

We report on analytic and numerical studies of spin textures in quantum Hall systems using a long-wavelength effective action for the magnetic degrees of freedom derived previously. The majority of our results concern skyrmions or solitons of this action. We have constructed approximate analytic solutions for skyrmions of arbitrary topological and electric charge and derived expressions for their energies and charge and spin radii. We describe a combined shooting/relaxational technique for numerical determination of the skyrmion profiles and present results that compare favorably with the analytic treatment as well as with Hartree-Fock studies of these objects. In addition, we describe a treatment of textures at the edges of quantum Hall systems within this approach and provide details not reported previously.

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