Quantum coherence in a ferromagnetic metal: time-dependent conductance fluctuations

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dc.creatorLee, S.
dc.creatorTrionfi, A.
dc.creatorNatelson, D.
dc.date2004-08-10
dc.date2004-08-10
dc.date.accessioned2026-07-07T02:59:40Z
dc.date.available2026-07-07T02:59:40Z
dc.descriptionQuantum coherence of electrons in ferromagnetic metals is difficult to assess experimentally. We report the first measurements of time-dependent universal conductance fluctuations in ferromagnetic metal (Ni$_{0.8}$Fe$_{0.2}$) nanostructures as a function of temperature and magnetic field strength and orientation. We find that the cooperon contribution to this quantum correction is suppressed, and that domain wall motion can be a source of coherence-enhanced conductance fluctuations. The fluctuations are more strongly temperature dependent than those in normal metals, hinting that an unusual dephasing mechanism may be at work.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0408221
dc.identifierhttp://arxiv.org/abs/cond-mat/0408221
dc.identifierPhys. Rev. B 70, 212407 (2004)
dc.identifierdoi:10.1103/PhysRevB.70.212407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24599
dc.subjectMesoscale and Nanoscale Physics
dc.titleQuantum coherence in a ferromagnetic metal: time-dependent conductance fluctuations
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