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A quantum material spintronic resonator.

Authors :
Xu JW
Chen Y
Vargas NM
Salev P
Lapa PN
Trastoy J
Grollier J
Schuller IK
Kent AD
Source :
Scientific reports [Sci Rep] 2021 Jul 23; Vol. 11 (1), pp. 15082. Date of Electronic Publication: 2021 Jul 23.
Publication Year :
2021

Abstract

In a spintronic resonator a radio-frequency signal excites spin dynamics that can be detected by the spin-diode effect. Such resonators are generally based on ferromagnetic metals and their responses to spin torques. New and richer functionalities can potentially be achieved with quantum materials, specifically with transition metal oxides that have phase transitions that can endow a spintronic resonator with hysteresis and memory. Here we present the spin torque ferromagnetic resonance characteristics of a hybrid metal-insulator-transition oxide/ ferromagnetic metal nanoconstriction. Our samples incorporate [Formula: see text], with Ni, Permalloy ([Formula: see text]) and Pt layers patterned into a nanoconstriction geometry. The first order phase transition in [Formula: see text] is shown to lead to systematic changes in the resonance response and hysteretic current control of the ferromagnetic resonance frequency. Further, the output signal can be systematically varied by locally changing the state of the [Formula: see text] with a dc current. These results demonstrate new spintronic resonator functionalities of interest for neuromorphic computing.<br /> (© 2021. The Author(s).)

Details

Language :
English
ISSN :
2045-2322
Volume :
11
Issue :
1
Database :
MEDLINE
Journal :
Scientific reports
Publication Type :
Academic Journal
Accession number :
34301961
Full Text :
https://doi.org/10.1038/s41598-021-93404-4