Spontaneous spin polarization in geometrically constricted metal nanowires

R. Cortes-Huerto, Pietro Ballone

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The electronic structure of thin conducting wires with a narrow geometric constriction has been determined by density-functional theory computations in the local spin density approximation. Spontaneous spin polarization arises in nominally paramagnetic wires at sufficiently low density (r(s)>= 15). Real-space spin-polarization maps show a fascinating variety of magnetic structures pinned at the constriction. The frequency-dependent conductivity is different for the spin-up and spin-down channels and significantly lower than in wires of identically vanishing spin polarization.
Original languageEnglish
Article number233304
JournalPhysical Review B (Condensed Matter)
Volume80
Issue number23
DOIs
Publication statusPublished - 29 Nov 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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