CME Seminar - Thursday, March 27th, 3:30PM, 4138 PRB - Georg Schmidt, Martin Luther University Halle - Wittenberg (MLU)

[Longbrake, Patricia]

Please join us on Thursday, March 27th at 3:30pm in 4138 PRB for a Condensed Matter Seminar presented by Georg Schmidt from Martin Luther University Halle-Wittenberg (MLU).  The title and abstract for his talk are listed below.

"Voltage controlled tunnel barriers in organic spin valves based on tunneling anisotropic magnetoresistance"

ABSTRACT:  We demonstrate that in an organic spin valve with a La0.7Sr0.3MnO3 (LSMO) electrode and a non-magnetic counter electrode voltage pulses can change the resistance by almost two orders of magnitude. Additionally tunneling anisotropic magnetoresistance (TAMR) up to 17% can be observed. Our experiments show that the width and height of the injection barrier between the LSMO and the organic semiconductor are changed by applied voltage pulses. Our observations can be explained by the creation of oxygen vacancies in the LSMO whose spatial distribution can be modified by electric fields. Large reverse voltages can reset the device to its original state.

Thank you,
Trisch

[The Ohio State University]
Trisch Longbrake
Administrative Associate I
Department of Physics Condensed Matter
2196 Physics Research Building, 191 W. Woodruff Ave., Columbus, OH 43210
614-292-2778 Office / 614-292-7557 Fax
longbrake.6 at osu.edu<mailto:longbrake.6 at osu.edu> osu.edu<http://osu.edu/>

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