Hysteretic resistance spikes in quantum Hall ferromagnets without domains

Simple item page
dc.creatorFreire, Henrique J. P.
dc.creatorEgues, J. Carlos
dc.date2004-12-17
dc.date2007-07-12
dc.date.accessioned2026-07-07T08:17:23Z
dc.date.available2026-07-07T08:17:23Z
dc.descriptionWe use spin-density-functional theory to study recently reported hysteretic magnetoresistance ρ_{xx} spikes in Mn-based 2D electron gases [Jaroszyński et al. Phys. Rev. Lett. (2002)]. We find hysteresis loops in our calculated Landau fan diagrams and total energies signaling quantum-Hall-ferromagnet phase transitions. Spin-dependent exchange-correlation effects are crucial to stabilize the relevant magnetic phases arising from distinct symmetry-broken excited- and ground-state solutions of the Kohn-Sham equations. Besides hysteretic spikes in ρ_{xx}, we predict hysteretic dips in the Hall resistance ρ_{xy}. Our theory, without domain walls, satisfactorily explains the recent data.
dc.description4 pages, 4 figures, published version (some changes to the text; same figures as in v1)
dc.identifierhttps://arxiv.org/abs/cond-mat/0412491
dc.identifierhttp://arxiv.org/abs/cond-mat/0412491
dc.identifierPhys. Rev. Lett. 99, 026801 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.026801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/134073
dc.subjectMesoscale and Nanoscale Physics
dc.titleHysteretic resistance spikes in quantum Hall ferromagnets without domains
dc.typetext

Files

Collections

arXiv