Abstract
Starting from the assumption that ferromagnetically correlated regions exist in manganites even in the absence of long-range magnetic order, we construct a model of charge transfer due to the spin-dependent tunnelling of charge carriers between such regions. This model allows us to analyze the temperature and magnetic field dependence of resistivity, magnetoresistance, and magnetic susceptibility of phase-separated manganites in the temperature range corresponding to non-metallic behavior. The comparison of theoretical and experimental results reveals the main characteristics of the phase-separated state.
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Kugel, K.I., Rakhmanov, A.L., Sboychakov, A.O., Kagan, M.Y., Brodsky, I.V., Klaptsov, A.V. (2004). Spin-Dependent Transport in Phase-Separated Manganites. In: Halilov, S. (eds) Physics of Spin in Solids: Materials, Methods and Applications. NATO Science Series II: Mathematics, Physics and Chemistry, vol 156. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2708-7_12
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DOI: https://doi.org/10.1007/1-4020-2708-7_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-2225-8
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