DocumentCode :
534036
Title :
Spin-torque magnetic nano-structures as microwave sources
Author :
Prokopenko, O.V. ; Prokopenko, L.E. ; Tiberkevich, V.S. ; Slavin, A.N.
Author_Institution :
Nat. Taras Shevchenko Univ. of Kiev, Kiev, Ukraine
fYear :
2010
fDate :
13-17 Sept. 2010
Firstpage :
844
Lastpage :
845
Abstract :
In experimental microwave sources based on spin-torque magnetic nano-structures (MNS) the power is extracted as oscillation of the device magnetoresistance (MR). The goal of our work is to evaluate the magnitude of the microwave power that can be extracted from a MNS through the oscillating dipolar fields when the MNS is coupled to different microwave systems, and to compare this power with the power that can be extracted through the traditional MR mechanism. We demonstrate that, although for a single MNS the MR mechanism is much more efficient than the direct dipolar electromagnetic emission, the latter mechanism can have a significant advantage in the case of a sufficiently large array of synchronized MNS placed in a microwave resonator.
Keywords :
magnetoresistance; microwave devices; oscillations; resonators; device magnetoresistance oscillation; microwave resonator; microwave sources; microwave system; oscillating dipolar field; spin-torque magnetic nano-structure; Arrays; Magnetic multilayers; Microwave communication; Microwave devices; Microwave oscillators; Tunneling magnetoresistance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave and Telecommunication Technology (CriMiCo), 2010 20th International Crimean Conference
Conference_Location :
Sevastopol
Print_ISBN :
978-1-4244-7184-3
Type :
conf
DOI :
10.1109/CRMICO.2010.5632858
Filename :
5632858
Link To Document :
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