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• W2975633497 abstract "We investigate the charge and spin structures associated with arbitrary smooth polarization textures in Ising (integer) quantum Hall ferromagnets. We consider the case where the two polarizations (denoted pseudospin up and down) correspond to states with opposite physical spin and different Landau level indices, $nuparrow$ and $mdownarrow$. We derive analytic expressions for the charge and spin densities, as functions of the underlying pseudospin texture, and use these results to investigate different types of linear domain walls, both analytically and numerically. We find that any smooth domain wall between two oppositely polarized domains carries a universal quantized charge dipole density proportional to the difference of Landau level indices, $n-m$. Additionally, non-uniformities in the domain wall may give rise to excess net charge localized at the domain wall. Interestingly, the physical spin density associated with the domain wall generally exhibits a much more complex multipolar structure than that of the pseudospin texture. These results should for example help to elucidate the mechanisms underlying nuclear electric resonance and nuclear polarization oscillations in Ising quantum Hall systems." @default.
• W2975633497 created "2019-10-03" @default.
• W2975633497 creator A5037476993 @default.
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• W2975633497 date "2019-12-05" @default.
• W2975633497 modified "2023-09-27" @default.
• W2975633497 title "Charge and spin textures of Ising quantum Hall ferromagnet domain walls" @default.
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• W2975633497 doi "https://doi.org/10.1103/physrevb.100.235406" @default.
• W2975633497 hasPublicationYear "2019" @default.
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