Resonance Method for Measuring Parameters of the Spin Transport in a Spin-Valve Structure

The known methods for measuring the spin transport parameters in spin-valve structures are based on the Hanle effect, viz., electron spin precession in an external magnetic field and a decrease in the magnetoresistive signal. These methods make it possible to determine the spin relaxation time in th...

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Bibliographic Details
Published in:Journal of experimental and theoretical physics 2023-04, Vol.136 (4), p.529-533
Main Authors: Strelkov, N. V., Vedyaev, A. V.
Format: Article
Language:English
Subjects:
Accumulation
Classical and Quantum Gravitation
Disorder
Electron spin
Elementary Particles
Magnetic fields
Magnetic permeability
Magnetization
Magnetoresistivity
Measurement
Measurement methods
Methods
Order
Paramagnetic resonance
Parameters
Particle and Nuclear Physics
Phase Transition in Condensed System
Physics
Physics and Astronomy
Quantum Field Theory
Relativity Theory
Relaxation time
Solid State Physics
Spin valves
Valves
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Summary:The known methods for measuring the spin transport parameters in spin-valve structures are based on the Hanle effect, viz., electron spin precession in an external magnetic field and a decrease in the magnetoresistive signal. These methods make it possible to determine the spin relaxation time in the paramagnetic layer and the relative current polarization constant. We describe an alternative method of measuring in zero external magnetic field, which is based on the resonant increase in the magnetic susceptibility of the paramagnetic layer due to the paramagnetic resonance induced by the nonequilibrium magnetization due to the spin accumulation effect. The proposed method makes it possible to determine the absolute value of spin accumulation in a paramagnet, which can be used as a parameter for numerical solution of three-dimensional diffusion equations of spin transport.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776123040064