Research Papers in Physics and Astronomy


Date of this Version



Published in Physical Review Letters 97, 077204 (2006); DOI: 10.1103/PhysRevLett.97.077204; Copyright © 2006 The American Physical Society. Used by permission.


We perform ab initio calculations of the electronic structure and conductance of atomic-size Ni nanowires with domain walls only a few atomic lattice constants wide. We show that the hybridization between noncollinear spin states leads to a reduction of the magnetic moments in the domain wall resulting in the enhancement of the domain wall resistance. Experimental studies of the magnetic moment softening may be feasible with modern techniques such as scanning tunneling spectroscopy.