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arxiv: 1211.3986 · v2 · pith:2LIRRODOnew · submitted 2012-11-16 · ❄️ cond-mat.mtrl-sci · cond-mat.mes-hall

Hanle effect missing in a prototypical organic spintronic device

Alberto Riminucci (1) , Mirko Prezioso (1) , Chiara Pernechele (2) , Patrizio Graziosi (1 , 3) , Ilaria Bergenti (1) , Raimondo Cecchini (1) , Marco Calbucci (1)
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Massimo Solzi (2) Alek Dediu (1) ((1) Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN) Bologna Italy (2) Universit\`a di Parma Dipartimento di Fisica Parma (3) Instituto de Tecnolog\'ia de Materiales Universidad Polit\'ecnica de Valencia Valencia Spain)
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classification ❄️ cond-mat.mtrl-sci cond-mat.mes-hall
keywords deviceeffecthanleorganicplaneprototypicalspinspintronic
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We investigate spin precession (Hanle effect) in the prototypical organic spintronic giant magnetoresistance (GMR) device La0.7Sr0.3MnO3(LSMO)/tris(8-hydroxyquinoline)(Alq3)/AlOx/Co. The Hanle effect is not observed in measurements taken by sweeping a magnetic field at different angles from the plane of the device. As possible explanations we discuss the tilting out of plane of the magnetization of the electrodes, exceptionally high mobility or hot spots. Our results call for a greater understanding of spin injection and transport in such devices.

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