G. D. Demin, A. F. Popkov, “Quantum oscillations of the microwave sensitivity of a spin-torque diode in a magnetic nanobridge”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2017, Volume 106, Issue 12,Pages <nobr>782

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MISCELLANEOUS

Quantum oscillations of the microwave sensitivity of a spin-torque diode in a magnetic nanobridge

G. D. Demin^ab, A. F. Popkov^ab

^a Laboratory of Physics and Magnetic Heterostructures for Spintronics and Energy Efficient Information Technologies, Moscow Institute of Physics and Technology (MIPT), Dolgoprudnyi, Moscow region, Russia
^b National Research University of Electronic Technology (MIET), Zelenograd, Moscow, Russia

Abstract: The reduction of the area of the cross section of a spin-valve-like structure to a nanoscale is an important problem of modern spin electronics. However, the transverse quantization of electronic states in the spin valve, which forms a magnetic nanobridge at this scale, additionally affects not only the magnetoresistance but also the spin-transfer torques. In this work, features of the quantization of the magnetoresistance and spin-angular momentum associated with the spin transfer in a Co/Au/Co metallic nanobridge with metallic contacts have been theoretically analyzed. It has been shown that these features are manifested in oscillations of the microwave sensitivity of a spin-torque diode based on the spin-valve structure mentioned above.

Received: 11.08.2017
Revised: 02.11.2017

DOI: 10.7868/S0370274X17240122