Transmission of correlated electrons through sharp domain walls in magnetic nanowires: a renormalization group approach

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 nanocontacs.

13 pages, 6 figures

References in corpus (2)

• Renormalization of impurity scattering in one-dimensional interacting electron systems in magnetic field
• Domain wall scattering in an interacting one-dimensional electron gas

Cited by in corpus (5)

• Current-induced interactions of multiple domain walls in magnetic quantum wires
• Electron scattering from domain walls in ferromagnetic Luttinger liquids
• Negative differential magneto-resistance in ferromagnetic wires with domain walls
• Local spin transfer torque and magnetoresistance in domain walls with variable width
• Non-Collinear Ferromagnetic Luttinger Liquids