Mean-field calculations of transport properties through magnetic point contacts

Kyu Ueno, Mikio Eto

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Electric transport through atomic-size point contacts of magnetic metals is theoretically studied. The conductance in spin-polarized states is examined, using a Green's function method to take into account the electron-electron interaction. In a single s-band model, the conductance quantization is observed in units of e2/h per spin direction. In a two-band model (broad s and narrow s bands), the conductance is considerably suppressed by the interband scattering around the point contact when the spin is polarized in one direction in the whole system. When the spin polarization on one side of the contact is anti-parallel to that on the other side, the interband scattering is not relevant and the conductance is quantized. These calculated results are in accordance with experimental results for break-junctions of Ni.

本文言語English
ページ(範囲)1501-1509
ページ数9
ジャーナルJournal of the Physical Society of Japan
72
6
DOI
出版ステータスPublished - 2003 6 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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