Electrical Measurement of Spin-Wave Interactions of Closely-Spaced Spin Transfer Nano-Oscillators

Published

August 23, 2006

Author(s)

Matthew Pufall, Billy F. Riddle, Stephen E. Russek, John Kakareka, Jordan A. Katine

Abstract

We have investigated the interaction mechanism between two nanocontact spin transfer oscillators made on the same magnetic spin valve multilayer. The oscillators phase lock when their precession frequencies are made similar, and a giant magnetoresistance (GMR) signal is detectable at one contact due to precession at the other. We show that cutting the magnetic mesa between the contacts with a focused ion beam modifies the contact outputs, eliminates the mutual phase locking, and strongly attenuates the GMR coupling, indicating that spin-waves, rather than magnetic fields, are the primary interaction mechanism.

Citation

Physical Review Letters

Volume

97

Issue

8

Pub Type

Journals

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Keywords

magnetodynamics, nanotechnology, oscillators, spin transfer torque, spintronics

Citation

Pufall, M. , Riddle, B. , Russek, S. , Kakareka, J. and Katine, J. (2006), Electrical Measurement of Spin-Wave Interactions of Closely-Spaced Spin Transfer Nano-Oscillators, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32344 (Accessed October 17, 2025)