Spin Pumping and Thermal Effects in Single-Crystalline Fe/Pt Bilayers at the Nonresonant Condition

Spin Pumping and Thermal Effects in Single-Crystalline Fe/Pt Bilayers at the Nonresonant Condition The voltage signal driven by a microwave at the nonresonant condition has been systematically studied in well-designed single-crystalline Fe and Fe/Pt bilayers. The voltage signals at the nonresonant condition in Fe and Fe/Pt show different angular dependence on the magnetization orientation. Through theoretical simulation and experiments of varying sample structures and field strength, it can be concluded that the voltage signal at the nonresonant condition consists of the thermal effects including the anomalous Nernst effect and the spin Seebeck effect, and the inverse spin Hall effect induced by spin pumping. Our results indicate that the microwave-induced signal at the nonresonant conditions may enable the device operation in the absence of any external magnetic field, which is beneficial for practical applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Applied American Physical Society (APS)

Spin Pumping and Thermal Effects in Single-Crystalline Fe/Pt Bilayers at the Nonresonant Condition

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Spin Pumping and Thermal Effects in Single-Crystalline Fe/Pt Bilayers at the Nonresonant Condition

Abstract

The voltage signal driven by a microwave at the nonresonant condition has been systematically studied in well-designed single-crystalline Fe and Fe/Pt bilayers. The voltage signals at the nonresonant condition in Fe and Fe/Pt show different angular dependence on the magnetization orientation. Through theoretical simulation and experiments of varying sample structures and field strength, it can be concluded that the voltage signal at the nonresonant condition consists of the thermal effects including the anomalous Nernst effect and the spin Seebeck effect, and the inverse spin Hall effect induced by spin pumping. Our results indicate that the microwave-induced signal at the nonresonant conditions may enable the device operation in the absence of any external magnetic field, which is beneficial for practical applications.
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Publisher
American Physical Society (APS)
Copyright
Copyright © © 2017 American Physical Society
eISSN
2331-7019
D.O.I.
10.1103/PhysRevApplied.8.014022
Publisher site
See Article on Publisher Site

Abstract

The voltage signal driven by a microwave at the nonresonant condition has been systematically studied in well-designed single-crystalline Fe and Fe/Pt bilayers. The voltage signals at the nonresonant condition in Fe and Fe/Pt show different angular dependence on the magnetization orientation. Through theoretical simulation and experiments of varying sample structures and field strength, it can be concluded that the voltage signal at the nonresonant condition consists of the thermal effects including the anomalous Nernst effect and the spin Seebeck effect, and the inverse spin Hall effect induced by spin pumping. Our results indicate that the microwave-induced signal at the nonresonant conditions may enable the device operation in the absence of any external magnetic field, which is beneficial for practical applications.

Journal

Physical Review AppliedAmerican Physical Society (APS)

Published: Jul 1, 2017

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