Skyrmions in disordered heterostructures}

Abstract

We have investigated the effect of weak disorder on the ground state of a two dimensional electron gas in the quantum Hall regime at filling factors slightly deviating from unity. The skyrmions and antiskyrmions are found to be present even at filling factor $\nu =1$. They may be strongly squeezed by the disorder. We have studied temperature effect on skyrmion density and size.

ZIP archive, 4 pages, 3 postscript figures

References in corpus (3)

• Quantum Hall Skyrmions with Higher Topological Charge
• Quantum Phase Transition in Skyrmion Lattices
• Disorder and the quantum Hall ferromagnet

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• Quantum Critical Dynamics of the Skyrmion Lattice
• Spin textures, screening and excitations in dirty quantum Hall ferromagnets
• Disorder-induced stabilization of the quantum Hall ferromagnet
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• Dirty quantum Hall ferromagnets and quantum Hall spin glasses
• Thermal Activation Signatures of the Anderson Insulator and the Wigner Solid forming near $\nu =1$
• Massive Spin Collective Mode in Quantum Hall Ferromagnet
• Pump-probe nuclear spin relaxation study of the quantum Hall ferromagnet at filling factor nu = 2
• Disorder and interactions in quantum Hall ferromagnets: effects of disorder in Skyrmion physics