Micromagnetic study of fieldlike spin torque effect on the magnetization switching in tunnel junctions with perpendicular anisotropy

2010 ◽  
Vol 97 (17) ◽  
pp. 172501 ◽  
Author(s):  
Zongzhi Zhang ◽  
Yongcheng Qiu ◽  
Q. Y. Jin ◽  
Yaowen Liu
Keyword(s):  
Tunnel Junctions ◽  
Spin Torque ◽  
Perpendicular Anisotropy ◽  
Magnetization Switching

Spin torque switching of 20 nm magnetic tunnel junctions with perpendicular anisotropy

2012 ◽  
Vol 100 (13) ◽  
pp. 132408 ◽  
Author(s):  
M. Gajek ◽  
J. J. Nowak ◽  
J. Z. Sun ◽  
P. L. Trouilloud ◽  
E. J. O’Sullivan ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Spin Torque ◽  
Perpendicular Anisotropy ◽  
20 Nm

Current-Induced Magnetization Switching of CoFeB/Ta/[Co/Pd (Pt)]-Multilayers in Magnetic Tunnel Junctions With Perpendicular Anisotropy

2016 ◽  
Vol 52 (7) ◽  
pp. 1-4 ◽  
Author(s):  
Shinya Ishikawa ◽  
Eli C. I. Enobio ◽  
Hideo Sato ◽  
Shunsuke Fukami ◽  
Fumihiro Matsukura ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Perpendicular Anisotropy ◽  
Magnetization Switching

scholarly journals Electrical characterisation of higher order spin wave modes in vortex-based magnetic tunnel junctions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Alex. S. Jenkins ◽  
Lara San Emeterio Alvarez ◽  
Samh Memshawy ◽  
Paolo Bortolotti ◽  
Vincent Cros ◽  
...  
Keyword(s):  
Spin Wave ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Higher Order ◽  
Spin Torque ◽  
Micromagnetic Simulations ◽  
Higher Order Modes ◽  
Spin Diode ◽  
Super High Frequency ◽  
Wave Modes

AbstractNiFe-based vortex spin-torque nano-oscillators (STNO) have been shown to be rich dynamic systems which can operate as efficient frequency generators and detectors, but with a limitation in frequency determined by the gyrotropic frequency, typically sub-GHz. In this report, we present a detailed analysis of the nature of the higher order spin wave modes which exist in the Super High Frequency range (3–30 GHz). This is achieved via micromagnetic simulations and electrical characterisation in magnetic tunnel junctions, both directly via the spin-diode effect and indirectly via the measurement of the coupling with the gyrotropic critical current. The excitation mechanism and spatial profile of the modes are shown to have a complex dependence on the vortex core position. Additionally, the inter-mode coupling between the fundamental gyrotropic mode and the higher order modes is shown to reduce or enhance the effective damping depending upon the sense of propagation of the confined spin wave.

Quantum theory of spin-torque driven magnetization switching

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
Ping Tang ◽  
Xiufeng Han ◽  
Shufeng Zhang
Keyword(s):  
Quantum Theory ◽  
Spin Torque ◽  
Magnetization Switching

Properties of perpendicular-anisotropy magnetic tunnel junctions fabricated over the bottom electrode contact

2015 ◽  
Vol 54 (4S) ◽  
pp. 04DM06 ◽  
Author(s):  
Sadahiko Miura ◽  
Hiroaki Honjo ◽  
Keizo Kinoshita ◽  
Keiichi Tokutome ◽  
Hiroaki Koike ◽  
...  
Keyword(s):  
Bottom Electrode ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Perpendicular Anisotropy ◽  
Electrode Contact
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