Spin-Pumping-Free Determination of Spin-Orbit Torque Efficiency from Spin-Torque Ferromagnetic Resonance

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Atsushi Okada ◽  
Yutaro Takeuchi ◽  
Kaito Furuya ◽  
Chaoliang Zhang ◽  
Hideo Sato ◽  
...  
Keyword(s):  
Ferromagnetic Resonance ◽  
Spin Torque ◽  
Spin Orbit ◽  
Spin Pumping

scholarly journals Transverse and Longitudinal Spin-Torque Ferromagnetic Resonance for Improved Measurement of Spin-Orbit Torque

2020 ◽  
Vol 14 (2) ◽  
Author(s):  
Saba Karimeddiny ◽  
Joseph A. Mittelstaedt ◽  
Robert A. Buhrman ◽  
Daniel C. Ralph
Keyword(s):  
Ferromagnetic Resonance ◽  
Spin Torque ◽  
Spin Orbit ◽  
Longitudinal Spin

scholarly journals Large spin-orbit torque efficiency enhanced by magnetic structure of collinear antiferromagnet IrMn

2019 ◽  
Vol 5 (5) ◽  
pp. eaau6696 ◽  
Author(s):  
Jing Zhou ◽  
Xiao Wang ◽  
Yaohua Liu ◽  
Jihang Yu ◽  
Huixia Fu ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Magnetic Structure ◽  
Ferromagnetic Resonance ◽  
Energy Efficient ◽  
Spin Torque ◽  
Memory Devices ◽  
Spin Orbit ◽  
Efficient Memory ◽  
Shed Light ◽  
Large Spin

Spin-orbit torque (SOT) offers promising approaches to developing energy-efficient memory devices by electric switching of magnetization. Compared to other SOT materials, metallic antiferromagnet (AFM) potentially allows the control of SOT through its magnetic structure. Here, combining the results from neutron diffraction and spin-torque ferromagnetic resonance experiments, we show that the magnetic structure of epitaxially grown L10-IrMn (a collinear AFM) is distinct from the widely presumed bulk one. It consists of twin domains, with the spin axes orienting toward [111] and [−111], respectively. This unconventional magnetic structure is responsible for much larger SOT efficiencies up to 0.60 ± 0.04, compared to 0.083 ± 0.002 for the polycrystalline IrMn. Furthermore, we reveal that this magnetic structure induces a large isotropic bulk contribution and a comparable anisotropic interfacial contribution to the SOT efficiency. Our findings shed light on the critical roles of bulk and interfacial antiferromagnetism to SOT generated by metallic AFM.

Influence of the spin pumping induced inverse spin Hall effect on spin-torque ferromagnetic resonance measurements

2021 ◽  
Vol 118 (13) ◽  
pp. 132401
Author(s):  
Qi Liu ◽  
Y. Zhang ◽  
L. Sun ◽  
Bingfeng Miao ◽  
X. R. Wang ◽  
...  
Keyword(s):  
Hall Effect ◽  
Ferromagnetic Resonance ◽  
Spin Hall Effect ◽  
Spin Torque ◽  
Spin Pumping ◽  
Inverse Spin Hall Effect

Determination of size of cobalt on alumina superparamagnetic particles via the ferromagnetic resonance method

1994 ◽  
Vol 129 (2-3) ◽  
pp. 317-321 ◽  
Author(s):  
Stanislav P. Solodovnikov ◽  
Alexander Yu. Vasil'kov ◽  
Andrei Yu. Olenin ◽  
Vladimir A. Sergeev
Keyword(s):  
Ferromagnetic Resonance ◽  
Resonance Method ◽  
Superparamagnetic Particles

scholarly journals Spin–orbit-driven ferromagnetic resonance

2011 ◽  
Vol 6 (7) ◽  
pp. 413-417 ◽  
Author(s):  
D. Fang ◽  
H. Kurebayashi ◽  
J. Wunderlich ◽  
K. Výborný ◽  
L. P. Zârbo ◽  
...  
Keyword(s):  
Ferromagnetic Resonance ◽  
Spin Orbit
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