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Thickness dependence study of current-driven ferromagnetic resonance in Y3Fe5O12/heavy metal bilayers.
- Source :
-
Applied Physics Letters . 2/27/2017, Vol. 110 Issue 9, p1-5. 5p. 2 Charts, 3 Graphs. - Publication Year :
- 2017
-
Abstract
- We use ferromagnetic resonance to study the current-induced torques in YIG/heavy metal bilayers. YIG samples with thickness varying from 14.8 nm to 80 nm, with the Pt or Ta thin film on top, are measured by applying a microwave current into the heavy metals and measuring the longitudinal DC voltage generated by both spin rectification and spin pumping. From a symmetry analysis of the FMR lineshape and its dependence on YIG thickness, we deduce that the Oersted field dominates over spin-transfer torque in driving magnetization dynamics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 110
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 121512491
- Full Text :
- https://doi.org/10.1063/1.4977490