2003/09/30 by R. G. Pereira, E. Miranda
Physics and Astronomy · #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.69.140402
published as Phys. Rev. B 69, 140402(R) (2004) · 4 pages, 1 figure
arxiv created 2004/04/06 · arxiv updated 2009/12/01
We study the transport in a Luttinger liquid coupled to a magnetic chain containing a Bloch domain wall. We compute the leading correction to the adiabatic limit of a long domain wall, which causes no scattering. We show that the problem is reminiscent of an impurity in a Luttinger liquid, but with a different dependence on the interaction parameters due to spin-flip scattering. For repulsive interactions, we find that the domain wall resistance diverges with decreasing temperature. This may be relevant for the design of one-dimensional systems with large magnetoresistance at low temperatures.