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Multivalued memory effects in electronic phase-change manganites controlled by Joule heating

H. Song·M. Tokunaga·S. Imamori·Y. Tokunaga·T. Tamegai
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Abstract

Non-volatile multivalued memory effects caused by magnetic fields, currents, and voltage pulses are studied in Nd_{0.65}Ca_{0.35}MnO_3 and (Nd_{1-y}Sm_{y})_{0.5}Sr_{0.5}MnO_3 (y=0.75) single crystals in the hysteretic region between ferromagnetic metallic and charge-ordered insulating states. The current/voltage effects observed in this study are explained by the self-heating effect, which enable us to control the colossal electroresistance effects. This thermal-cycle induced switching between electronic solid and liquid states can be regarded as electronic version of atomic crystal/amorphous transitions in phase-change chalcogenides.

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H. Song, M. Tokunaga, S. Imamori, Y. Tokunaga, T. Tamegai. 2006-07-30. Multivalued memory effects in electronic phase-change manganites controlled by Joule heating. https://doi.org/10.1103/physrevb.74.052404

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