Spin transfer induced coherent microwave emission with large power from nanoscale MgO tunnel junctions

D Houssameddine, SH Florez, JA Katine… - Applied Physics …, 2008 - pubs.aip.org
In low resistance-area product MgO magnetic tunnel junction nanopillars, we observe high
integrated power (up to 43 nW⁠), narrow linewidth (down to 10 MHz⁠), spin transfer …

Spin transfer stimulated microwave emission in MgO magnetic tunnel junctions

AV Nazarov, HM Olson, H Cho, K Nikolaev… - Applied Physics …, 2006 - pubs.aip.org
Measurements of noise properties of MgO-based magnetic tunnel junctions were performed
in the frequency range from 100 MHz to 18 GHz⁠. A pronounced narrow peak at the …

Bias-driven high-power microwave emission from MgO-based tunnel magnetoresistance devices

AM Deac, A Fukushima, H Kubota, H Maehara… - Nature Physics, 2008 - nature.com
Spin-momentum transfer between a spin-polarized current and a ferromagnetic layer can
induce steady-state magnetization precession, and has recently been proposed as a …

Enhancement of microwave emission in magnetic tunnel junction oscillators through in-plane field orientation

ZM Zeng, P Upadhyaya, P Khalili Amiri… - Applied Physics …, 2011 - pubs.aip.org
We observe giant enhancement of microwave emission in MgO-based magnetic tunnel
junction nano-oscillators through in-plane magnetic field orientation. At an optimal in-plane …

Microwave generation in MgO magnetic tunnel junctions due to spin transfer effects

AV Nazarov, K Nikolaev, Z Gao, H Cho… - Journal of Applied …, 2008 - pubs.aip.org
Low resistance-area product and high spin polarization lead to current-driven precession of
the magnetization in Co Fe B∕ Mg O∕ Co Fe B magnetic tunnel junctions due to spin …

Large microwave generation from current-driven magnetic vortex oscillators in magnetic tunnel junctions

A Dussaux, B Georges, J Grollier, V Cros… - Nature …, 2010 - nature.com
Spin-polarized current can excite the magnetization of a ferromagnet through the transfer of
spin angular momentum to the local spin system. This pure spin-related transport …

Origin of the spectral linewidth in nonlinear spin-transfer oscillators based on MgO tunnel junctions

B Georges, J Grollier, V Cros, A Fert, A Fukushima… - Physical Review B …, 2009 - APS
We demonstrate the strong impact of the oscillator nonlinearity on the line broadening by
studying spin-transfer-induced microwave emission in MgO-based tunnel junctions as a …

Microwave amplification in a magnetic tunnel junction induced by heat-to-spin conversion at the nanoscale

M Goto, Y Wakatake, UK Oji, S Miwa, N Strelkov… - Nature …, 2019 - nature.com
Heat-driven engines are hard to realize in nanoscale machines because of efficient heat
dissipation. However, in the realm of spintronics, heat has been employed successfully—for …

High-power coherent microwave emission from magnetic tunnel junction nano-oscillators with perpendicular anisotropy

Z Zeng, PK Amiri, IN Krivorotov, H Zhao, G Finocchio… - ACS …, 2012 - ACS Publications
The excitation of the steady-state precessions of magnetization opens a new way for
nanoscale microwave oscillators by exploiting the transfer of spin angular momentum from a …

Bias dependence of perpendicular spin torque and of free-and fixed-layer eigenmodes in MgO-based nanopillars

PK Muduli, OG Heinonen, J Åkerman - Physical Review B—Condensed Matter …, 2011 - APS
We have measured the bias voltage and field dependence of eigenmode frequencies in a
magnetic tunnel junction with MgO barrier. We show that both free layer (FL) and reference …