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An Investigation Of The Ferromagnetic Insulating State Of ManganitesJain, Himanshu 07 1900 (has links)
Electrical conductance in the ferromagnetic insulating (FMI) phase of manganites has been experimentally investigated. The investigations were performed on single crystals of compositions La0.82Ca0.18MnO3 and Nd0.7Pb0.3MnO3. The nature of electrical conductance is determined to be Shklovskii–Efros variable range hopping (SE–VRH). Further, at high bias levels, non–linear conductance (NLC) is observed. A “hot electron” model, that quantitatively explains the bias and temperature dependence of the NLC, consistent with the SE–VRH nature of electrical conductance, is presented. The limits of validity of the model are discussed.
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Spin-orbit interaction in quantum dots and quantum wires of correlated electrons - A way to spintronics? / Spin-Bahn-Wechselwirkung in Quantenpunkten und Quantendrähten korrelierter Elektronen - Ein Weg Richtung Spintronik?Birkholz, Jens Eiko 06 October 2008 (has links)
No description available.
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