Magnetic excitations in a nanocontact
Citation:J.M.D. Coey, L. Berger and Y. Labaye 'Magnetic excitations in a nanocontact' in Physical Review B, 64, (2), 2001, pp 204071-204073
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The domain wall in a ferromagnetic nanocontact adopts a specific configuration?Neel-like, vortex, or Bloch-like?depending 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.
Author: COEY, JOHN MICHAEL DAVID
Publisher:American Physical Society
Series/Report no:Physical Review B
Availability:Full text available