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Article overview
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Macroscopic Quantum Tunneling of a Domain Wall in a Ferromagnetic Metal | Gen Tatara
; Hidetoshi Fukuyama
; | Date: |
8 Jul 1993 | Subject: | cond-mat | Affiliation: | Department of Physics, University of Tokyo, 7-3-1 Hongo, Tokyo 113, Japan | Abstract: | The macroscopic quantum tunneling of a planar domain wall in a ferromagnetic metal is studied based on the Hubbard model. It is found that the ohmic dissipation is present even at zero temperature due to the gapless Stoner excitation, which is the crucial difference from the case of the insulating magnet. The dissipative effect is calculated as a function of width of the wall and is shown to be effective in a thin wall and in a weak ferromagnet. The results are discussed in the light of recent experiments on ferromagnets with strong anisotropy. PACS numbers:75.60.Ch, 03.65.Sq, 75.10.Lp | Source: | arXiv, cond-mat/9307012 | Other sources: | [GID 479223] cond-mat/9402050 pmid10056519 | Services: | Forum | Review | PDF | Favorites |
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