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- W2087834758 abstract "We report on the magnetotransport properties and spin polarization of Co-doped (La,Sr)TiO3 (Co-LSTO) thin films in which the host oxide is a strongly correlated metal with a high density of carriers. In order to probe the spin polarization, we have performed tunneling magnetoresistance (TMR) measurements on magnetic tunnel junctions associating Co-LSTO and Co electrodes. A large spin polarization of around −80% has been determined at low temperatures, indicating that the carriers in this system are highly spin-polarized. We also report on the planar magnetotransport experiments on Co-LSTO films grown on SrTiO3 substrates. The electrical properties of these samples are strongly dependent on the growth conditions and large electronic mobilities as high as 104 cm2/V s at T<10 K are observed for specimens grown at the lowest oxygen pressure. We show that this high-mobility state is three-dimensional and we relate it to the doping of the SrTiO3 substrate with oxygen vacancies." @default.
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- W2087834758 date "2007-03-01" @default.
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- W2087834758 title "High-spin polarized Co-doped (La,Sr)TiO3 thin films on high-mobility SrTiO3 substrates" @default.
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- W2087834758 doi "https://doi.org/10.1016/j.jmmm.2006.10.784" @default.
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