Author:
Xu Jun-Wen,Chen Yizhang,Vargas Nicolás M.,Salev Pavel,Lapa Pavel N.,Trastoy Juan,Grollier Julie,Schuller Ivan K.,Kent Andrew D.
Abstract
AbstractIn 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 $${\mathrm {V}}_2{\mathrm {O}}_3$$
V
2
O
3
, with Ni, Permalloy ($${\hbox {Ni}}_{80}{\hbox {Fe}}_{20}$$
Ni
80
Fe
20
) and Pt layers patterned into a nanoconstriction geometry. The first order phase transition in $${\mathrm {V}}_2{\mathrm {O}}_3$$
V
2
O
3
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 $${\mathrm {V}}_2{\mathrm {O}}_3$$
V
2
O
3
with a dc current. These results demonstrate new spintronic resonator functionalities of interest for neuromorphic computing.
Funder
Quantum Materials for Energy Efficient Neuromorphic Computing
Publisher
Springer Science and Business Media LLC
Reference28 articles.
1. Hellman, F. et al. Interface-induced phenomena in magnetism. Rev. Mod. Phys. 89, 025006 (2017).
2. Saerbeck, T. et al. Coupling of magnetism and structural phase transitions by interfacial strain. J. Mater. Res. 29, 2353 (2014).
3. De La Venta, J. et al. Coercivity enhancement in $${\rm {V}}_2 {\rm {O}}_3/\text{Ni }$$ bilayers driven by nanoscale phase coexistence. Appl. Phys. Lett. 104, 062410 (2014).
4. Lauzier, J., Sutton, L. & De La Venta, J. Magnetic irreversibility in $$\text{ VO}_2/\text{Ni }$$ bilayers. J. Phys.: Condens. Matter 30, 374004 (2018).
5. Ramírez, J. G. et al. Collective mode splitting in hybrid heterostructures. Phys. Rev. B 93, 214113 (2016).
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