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

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

2006-07-30

arxiv.org/abs/cond-mat/0607795v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures. to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.74.052404

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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