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

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

2001-12-18

arxiv.org/abs/cond-mat/0112334v3

Phys.Rev B (RC) 66, 041308 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures included

Scientific paper

10.1103/PhysRevB.66.041308

We study spin textures in a quantum Hall Ising ferromagnet. Domain walls between ferro and unpolarized states at $\nu=2$ 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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