Half Metallic Response of Manganite Films at Room Temperature from Spin-Polarized Scanning Tunneling Microscopy

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dc.creatorCavallini, M.
dc.creatorBiscarini, F.
dc.creatorDediu, V.
dc.creatorNozar, P.
dc.creatorTaliani, C.
dc.creatorZamboni, R.
dc.date2003-01-08
dc.date.accessioned2026-07-07T02:49:04Z
dc.date.available2026-07-07T02:49:04Z
dc.descriptionThe ferromagnetic phase in La0.7Sr0.3MnO3 manganite is completely spin polarized (100%) at room temperature. This is demonstrated on high quality epitaxial films by Spin-Polarized Scanning Tunneling Microscopy. The films consist of a highly homogeneous ferromagnetic (FM) phase in which minority paramagnetic (PM) defects are embedded (less than 1% for best films). PM defects exhibit featureless tunneling spectroscopic characteristics and an insulating-like conductance. FM phase exhibit metallic behavior and strongly nonlinear characteristics. Deconvolution of the spectroscopic curves for the FM phase reveals the totally spin-splitted egt2g manganite bands whose shape and width are in an excellent agreement with optical and photoemission spectroscopy data. These results promote the manganites as efficient spin polarized injectors at ambient conditions.
dc.description12 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0301101
dc.identifierhttp://arxiv.org/abs/cond-mat/0301101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20654
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleHalf Metallic Response of Manganite Films at Room Temperature from Spin-Polarized Scanning Tunneling Microscopy
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