Resonant spin-torque in double barrier magnetic tunnel junctions

2006 ◽  
Vol 355 (3) ◽  
pp. 243-246 ◽  
Author(s):  
A. Vedyayev ◽  
N. Ryzhanova ◽  
B. Dieny ◽  
N. Strelkov
Keyword(s):  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Spin Torque ◽  
Double Barrier

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.

scholarly journals Long-Range Phase Coherence in Double-Barrier Magnetic Tunnel Junctions with a Large Thick Metallic Quantum Well

2015 ◽  
Vol 115 (15) ◽  
Author(s):  
B. S. Tao ◽  
H. X. Yang ◽  
Y. L. Zuo ◽  
X. Devaux ◽  
G. Lengaigne ◽  
...  
Keyword(s):  
Quantum Well ◽  
Long Range ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Phase Coherence ◽  
Double Barrier

Bias voltage effect on tunnel magnetoresistance in fully epitaxial MgO double-barrier magnetic tunnel junctions

2005 ◽  
Vol 86 (8) ◽  
pp. 082501 ◽  
Author(s):  
T. Nozaki ◽  
A. Hirohata ◽  
N. Tezuka ◽  
S. Sugimoto ◽  
K. Inomata
Keyword(s):  
Bias Voltage ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Double Barrier ◽  
Tunnel Magnetoresistance

Perpendicular Spin Torque in Magnetic Tunnel Junctions

2010 ◽  
Vol 105 (6) ◽  
Author(s):  
O. G. Heinonen ◽  
S. W. Stokes ◽  
J. Y. Yi
Keyword(s):  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Spin Torque
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