Magnetic Moment Softening and Domain Wall Resistance in Ni Nanowires

Abstract

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.

arXiv comment4 pages, 5 figures

References in corpus (10)

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• Geometrically constrained magnetic wall
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• Negative Domain Wall Resistance in Ferromagnets
• Ballistic electron transport through magnetic domain walls
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Cited by in corpus (5)

• Ni/Ni3C Core-Shell Nanochains and Its Magnetic Properties: One-Step Synthesis at low temperature
• Scaling Analysis and Application: Phase Diagram of Magnetic Nanorings and Elliptical Nanoparticles
• Conduction eigenchannels of atomic-sized contacts: Ab initio KKR Green's function formalism
• Conductance fingerprints of non-collinear magnetic states in single atom contacts: a first-principles Wannier functions study
• Landau-Zener and Rabi oscillations in the spin-dependent conductance