Magnetic Moment Softening and Domain Wall Resistance in Ni Nanowires

Details Magnetic Moment Softening and Domain Wall Resistance in Ni Nanowires Magnetic Moment Softening and Domain Wall Resistance in Ni Nanowires

2006-01-30

arxiv.org/abs/cond-mat/0601662v1

Physics

Condensed Matter

Materials Science

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.97.077204

Magnetic moments in atomic scale domain walls formed in nanoconstrictions and nanowires are softened which affects dramatically the domain wall resistance. 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. This magnetic moment softening strongly enhances the domain wall resistance due to scattering produced by the local perturbation of the electronic potential.

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