Magnetic excitations in a nanocontact

被引：27

作者：

Coey, JMD ^{[1
]}

Berger, L

Labaye, Y

机构：

[1] Trinity Coll Dublin, Dept Phys, Dublin 2, Ireland

[2] Univ Maine, Lab Phys Etat Condense, CNRS, UMR 6087, F-72085 Le Mans, France

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.64.020407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The domain wall in a ferromagnetic nanocontact adopts a specific configuration-Neel-like, vortex. or Bloch-likedepending on the dipole-dipole interactions governed by the size and shape of the contact and its atomic structure. Spontaneous thermal fluctuations between these modes arise in a soft ferromagnet at room temperature when the dimensions of the contact are less than about 10 nm. The giant magnetoresistance of a nanocontact may be reduced, but not eliminated by the mode fluctuations.

引用

页数：3

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[11] Controlled fabrication of metallic electrodes with atomic separation [J].