DocumentCode
2885216
Title
Triple mode-jumping in a spin torque oscillator
Author
Eklund, Anders J. ; Sani, S.R. ; Mohseni, S.M. ; Persson, Johannes ; Malm, B. Gunnar ; Akerman, J.
Author_Institution
Sch. of Inf. & Commun. Technol., KTH R. Inst. of Technol., Kista, Sweden
fYear
2013
fDate
24-28 June 2013
Firstpage
1
Lastpage
4
Abstract
In a nano-contact Co/Cu/NiFe spin torque oscillator, mode-jumping between up to three frequencies within 22.5-24.0 GHz is electrically observed in the time domain. The measurements reveal toggling between two states with differing oscillation amplitude, of which the low-amplitude state is further divided into two rapidly alternating modes. Analysis of the mode dwell time statistics and the total time spent in each mode is carried out, and it is found that in both aspects the balance between the modes is greatly altered with the DC drive current.
Keywords
Permalloy; cobalt; copper; oscillators; torque; Co-Cu-NiFe; DC drive current; frequency 22.5 GHz to 24.0 GHz; low-amplitude state; mode dwell time statistics; nanocontact spin torque oscillator; oscillation amplitude; time-domain analysis; triple mode-jumping; Magnetic resonance; Oscillators; Radio frequency; Time-domain analysis; Time-frequency analysis; Torque;
fLanguage
English
Publisher
ieee
Conference_Titel
Noise and Fluctuations (ICNF), 2013 22nd International Conference on
Conference_Location
Montpellier
Print_ISBN
978-1-4799-0668-0
Type
conf
DOI
10.1109/ICNF.2013.6578965
Filename
6578965
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