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Title: Transmission of correlated electrons through sharp domain walls in magnetic nanowires: A renormalization group approach
Authors: Araújo, Miguel
Dugaev, Vitalii
Vieira, Vítor
Berakdar, Jamal
Barnas, Josef
Keywords: spintrónica
domínio magnético
líquido de Luttinger
grupo de renormalização
Issue Date: 2006
Publisher: Physical Review B
Citation: Physical Review B 74, 224429 (2006)
Abstract: The transmission of correlated electrons through a domain wall in a ferromagnetic one-dimensional system is studied theoretically in the limit of a domain wall width smaller or comparable to the electron Fermi wavelength. The domain wall gives rise to both potential and spin-dependent scattering of the charge carriers. Using a “poor man’s” renormalization group approach for the electron-electron interactions, we obtain the low temperature behavior of the reflection and transmission coefficients. The results show that the low-temperature conductance is governed by the electron correlations, which may suppress charge transport without suppressing spin current. The results may account for a huge magnetoresistance associated with a domain wall in ballistic nanocontacts.
Type: article
Appears in Collections:FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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