Journal Article

FZJ-2014-00635

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Quenched Slonczewski windmill in spin-torque vortex oscillators

Sluka, V. (Corresponding author) ; Kákay, A.FZJ* ; Deac, A. M. ; Bürgler, D. E. ; Hertel, R.FZJ* ; Schneider, C. M.FZJ*

2012
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/5856  doi:10.1103/PhysRevB.86.214422

Abstract: We present a combined analytical and numerical study on double-vortex spin-torque nano-oscillators and describe a mechanism that suppresses the windmill modes. The magnetization dynamics is dominated by the gyrotropic precession of the vortex in one of the ferromagnetic layers. In the other layer, the vortex gyration is strongly damped. The dominating layer for the magnetization dynamics is determined by the sign of the product between sample current and the chiralities. Measurements on Fe/Ag/Fe nanopillars support these findings. The results open up a new perspective for building high quality-factor spin-torque oscillators operating at selectable, well-separated frequency bands.

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Contributing Institute(s):

1. Elektronische Eigenschaften (PGI-6)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 422 - Spin-based and quantum information (POF2-422) (POF2-422)

Appears in the scientific report 2013

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Database coverage:
; ; ; Current Contents - Social and Behavioral Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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