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Spins, charges and currents at Domain Walls in a Quantum Hall Ising Ferromagnet

L. Brey·C. Tejedor
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Abstract

We study spin textures in a quantum Hall Ising ferromagnet. Domain walls between ferro and unpolarized states at $ν=2$ are analyzed with a functional theory supported by a microscopic calculation. In a neutral wall, Hartree repulsion prevents the appearance of a fan phase provoked by a negative stiffness. For a charged system, electrons become trapped as solitons at the domain wall. The size and energy of the solitons are determined by both Hartree and spin-orbit interactions. Finally, we discuss how electrical transport takes place through the domain wall.

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L. Brey, C. Tejedor. 2002-08-20. Spins, charges and currents at Domain Walls in a Quantum Hall Ising Ferromagnet. https://doi.org/10.1103/physrevb.66.041308

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