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Spin motive force induced in Fe3O4thin films with negative spin polarization
- Source :
- Applied Physics Express. 8:123001
- Publication Year :
- 2015
- Publisher :
- IOP Publishing, 2015.
-
Abstract
- Spin motive force (SMF) is induced by a time and spatial derivative of magnetizations and is dependent on spin polarization. We compare the SMF in FeNi with positive spin polarization with that in a magnetite (Fe3O4) with negative spin polarization. We observe the SMF induced by a nonuniform ferromagnetic resonance in Fe3O4 and find that the SMF in Fe3O4 is opposite to that in FeNi. This result originates from the negative spin polarization of Fe3O4. Our clear observation of the SMF depending on the sign of the spin polarization agrees well with the framework of the SMF theory.
- Subjects :
- Condensed matter physics
Spin polarization
Chemistry
Mathematics::History and Overview
General Engineering
Physics::Optics
General Physics and Astronomy
Ferromagnetic resonance
Condensed Matter::Materials Science
Spin Hall effect
Condensed Matter::Strongly Correlated Electrons
Thin film
Sign (mathematics)
Spin-½
Subjects
Details
- ISSN :
- 18820786 and 18820778
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Applied Physics Express
- Accession number :
- edsair.doi...........7b137fe76c8851d106e1725b2b27f6af