Angular momentum transport in magnetic structures
Mardi 5 juillet 2016 14:00
- Duree : 1 heure
Lieu : SPINTEC, Bât 10-05 - room 446, CEA Grenoble, 17 rue des martyrs
Orateur : Shufeng ZHANG (Arizona State University)
Angular momentum (AM) currents in spintronics are carried by conduction electrons, quasiparticle magnons, as well as macroscopic order-parameters.
Depending on materials, one or all of these carries contribute to the AM current. The recent experimental discovery on the enhanced spin transmission at finite temperatures with an antiferromagnetic insulator (AFI) indicates that magnetic excitations such as magnons play a pivotal role in the AM transport. By using a generic short-range exchange model at interfaces, we calculate AM transmission and conversion for different interfaces. Our theory provides a detailed work scheme to model spin-charge coupling in multilayered structure with various material combinations. An explicit application to the trilayer consisting of NiFe/NiO/Pt is discussed and our results are compared with recent experimental data.
Contact : olivier.boulle@cea.fr
Discipline évènement : (Physique)
Nature évènement : (Séminaire)
Evènement répétitif : (Séminaire nanomagnétisme et spintronique)
Site de l'évènement : Site CEA avec accès badge
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