2006/10/09 by M. A. N. Araújo, M. A. N. Araujo, V. K. Dugaev +5 · 1 citation
Engineering · Physics and Astronomy · #Ballistic conduction #Condensed matter physics #Conductance #Domain wall (magnetism) #Electron #Ferromagnetism #Magnetic field #Magnetic properties of thin films #Magnetization #Magnetoresistance #Materials science #Nanowire #Optics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Renormalization group #Scattering #Semiconductor materials and devices #Spin (aerodynamics) #Transmission (telecommunications) #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.74.224429
published as Physical Review B 74, 224429 (2006) · 13 pages, 6 figures
arxiv created 2006/10/09 · openalex publication_date 2006/12/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.