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 …

[HTML][HTML] Quantitative measurement of voltage dependence of spin-transfer torque in MgO-based magnetic tunnel junctions

H Kubota, A Fukushima, K Yakushiji, T Nagahama… - Nature Physics, 2008 - nature.com
When an electric current passes from one ferromagnetic layer via a non-magnetic layer into
another ferromagnetic layer, the spin polarization and subsequent rotation of this current can …

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 …

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 …

Sensitivity of spin-torque diodes for frequency-tunable resonant microwave detection

C Wang, YT Cui, JZ Sun, JA Katine… - Journal of Applied …, 2009 - pubs.aip.org
We calculate the efficiency with which magnetic tunnel junctions can be used as resonant
detectors of incident microwave radiation via the spin-torque diode effect. The expression …

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 …

Measurement of the spin-transfer-torque vector in magnetic tunnel junctions

JC Sankey, YT Cui, JZ Sun, JC Slonczewski… - Nature Physics, 2008 - nature.com
The transfer of spin angular momentum from a spin-polarized current to a ferromagnet can
generate sufficient torque to reorient the magnet's moment. This torque could enable the …

[HTML][HTML] Ultralow-current-density and bias-field-free spin-transfer nano-oscillator

Z Zeng, G Finocchio, B Zhang, PK Amiri, JA Katine… - Scientific reports, 2013 - nature.com
The spin-transfer nano-oscillator (STNO) offers the possibility of using the transfer of spin
angular momentum via spin-polarized currents to generate microwave signals. However, at …

Spin Torque, Tunnel-Current Spin Polarization, and Magnetoresistance<? format?> in MgO Magnetic Tunnel Junctions

GD Fuchs, JA Katine, SI Kiselev, D Mauri, KS Wooley… - Physical Review Letters, 2006 - APS
We employ the spin-torque response of magnetic tunnel junctions with ultrathin MgO tunnel
barrier layers to investigate the relationship between spin transfer and tunnel …

Amplitude and phase noise of magnetic tunnel junction oscillators

M Quinsat, D Gusakova, JF Sierra, JP Michel… - Applied Physics …, 2010 - pubs.aip.org
The microwave emission linewidth of spin transfer torque nano-oscillators is closely related
to their phase and amplitude noise that can be extracted from the magnetoresistive voltage …