scholarly journals Feedback control of noise in spin valves by the spin-transfer torque

2011 ◽  
Vol 98 (8) ◽  
pp. 083110 ◽  
Author(s):  
Swarnali Bandopadhyay ◽  
Arne Brataas ◽  
Gerrit E. W. Bauer
Keyword(s):  
Feedback Control ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Spin Valves

Thermal spin-transfer torque driven by the spin-dependent Seebeck effect in metallic spin-valves

2015 ◽  
Vol 11 (7) ◽  
pp. 576-581 ◽  
Author(s):  
Gyung-Min Choi ◽  
Chul-Hyun Moon ◽  
Byoung-Chul Min ◽  
Kyung-Jin Lee ◽  
David G. Cahill
Keyword(s):  
Spin Transfer Torque ◽  
Seebeck Effect ◽  
Spin Transfer ◽  
Spin Valves

Spin-Transfer-Torque Driven Vortex Dynamics in Electrodeposited Nanowire Spin-Valves

SPIN ◽  
2017 ◽  
Vol 07 (01) ◽  
pp. 1740007 ◽  
Author(s):  
Flavio Abreu Araujo ◽  
Luc Piraux
Keyword(s):  
Magnetic Field ◽  
Porous Alumina ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Microwave Emission ◽  
Spin Valves ◽  
Zero Magnetic Field ◽  
Micromagnetic Simulations ◽  
Magnetic Layers ◽  
In Series

A bottom-up approach for the fabrication of an assembly of electrodeposited nanowires has been combined to single nanowire electrical connection techniques to investigate the spin-transfer-torque and microwave emission of specially designed nanowires containing Co/Cu/Co pseudo spin-valves (SVs). Porous alumina templates are used for the growth by electrodeposition of metallic in-series connected SVs. Under specific magnetic field and injected current conditions, emission of microwave current is detected with frequency in the GHz range and linewidth as low as 1.8[Formula: see text]MHz. Microwave signals have been obtained even at zero magnetic field and high frequency versus magnetic field tunability was demonstrated. Our findings are in good agreement with micromagnetic simulations. In addition, it appears that in our particular geometry, the microwave emission is generated by the vortex gyrotropic motion which occurs in, at least, one of the two magnetic layers of our SV structures.

scholarly journals Spin-transfer-torque reversal in perpendicular anisotropy spin valves with composite free layers

2011 ◽  
Vol 99 (13) ◽  
pp. 132502 ◽  
Author(s):  
I. Yulaev ◽  
M. V. Lubarda ◽  
S. Mangin ◽  
V. Lomakin ◽  
Eric E. Fullerton
Keyword(s):  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Spin Valves ◽  
Perpendicular Anisotropy
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