Journal of Magnetism and Magnetic Materials vol:226 Part 1 Special Iss. SI pages:745-746
For antiferromagnetically coupled [Fe/Cr](10) multilayers with Fe(Cr) thickness 30(13.5) Angstrom and 12(12) Angstrom, we found that at low fields the contribution of the domain walls to the resistivity, rho (DW), is small at room temperature and strongly enhanced at low temperatures. Magnetic force microscopy images clearly reveal the presence of domain walls. In a wide interval above 1.9 K rho (DW) varies as rho (DW)(T) = rho (DW)(0) - AT(alpha) with the exponent alpha similar or equal to 0.7-1. indicating the possible presence of quantum interference effects in the quasiballistic electron transport through domain walls. (C) 2001 Elsevier Science B.V. All rights reserved.