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Chirality-mediated bistability and strong frequency downshifting of the gyrotropic resonance of a dynamically de-stiffened magnetic vortex
Manu Sushruth, Jasper Fried, Abdelmadjid Anane +4
We demonstrate an enhanced, bidirectional, in-plane magnetic field tuning of the gyrotropic resonance frequency of a magnetic vortex within a disk by introducing a flat edge. When…
Electrical measurement of magnetic-field-impeded polarity switching of a ferromagnetic vortex core
Manu Sushruth, Jasper P. Fried, Abdelmadjid Anane +5
Vortex core polarity switching in NiFe disks has been evidenced using an all-electrical rectification scheme. Both simulation and experiments yield a consistent loss of the rectifi…
Experimental evidences of a large extrinsic spin Hall effect in AuW alloy
P. Laczkowski, J. -C. Rojas-Sánchez, W. Savero-Torres +10
We report an experimental study of a gold-tungsten alloy (7% at. W concentration in Au host) displaying remarkable properties for spintronics applications using both magneto-transp…
High-performance ferroelectric memory based on fully patterned tunnel junctions
S. Boyn, S. Girod, V. Garcia +9
In tunnel junctions with ferroelectric barriers, switching the polarization direction modifies the electrostatic potential profile and the associated average tunnel barrier height.…
Giant Spin Hall Effect Induced by Skew Scattering from Bismuth Impurities inside Thin Film CuBi Alloys
Y. Niimi, Y. Kawanishi, D. H. Wei +6
We demonstrate that a giant spin Hall effect (SHE) can be induced by introducing a small amount of Bi impurities in Cu. Our analysis based on a new 3-dimensional finite element tre…
Zero-temperature spin-glass freezing in self-organized arrays of Co nanoparticles
R. López-Ruiz, F. Luis, J. Sesé +3
We study, by means of magnetic susceptibility and magnetic aging experiments, the nature of the glassy magnetic dynamics in arrays of Co nanoparticles, self-organized in N layers f…
Extrinsic Spin Hall Effect Induced by Iridium Impurities in Copper
Y. Niimi, M. Morota, D. H. Wei +5
We study the extrinsic spin Hall effect induced by Ir impurities in Cu by injecting a pure spin current into a CuIr wire from a lateral spin valve structure. While no spin Hall eff…