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Magnetoresistance of heavy and light metal/ferromagnet bilayers
Can Onur Avci, Kevin Garello, Johannes Mendil +6
We studied the magnetoresistance of normal metal (NM)/ferromagnet (FM) bilayers in the linear and nonlinear (current-dependent) regimes and compared it with the amplitude of the sp…
Spin-orbit torque driven chiral magnetization reversal in ultrathin nanostructures
N. Mikuszeit, O. Boulle, I. M. Miron +4
We show that the spin-orbit torque induced magnetization switching in nanomagnets presenting Dzyaloshinskii-Moriya (DMI) interaction is governed by a chiral domain nucleation at th…
Ultra-fast perpendicular Spin Orbit Torque MRAM
Murat Cubukcu, Olivier Boulle, Nikolaï Mikuszeit +14
We demonstrate ultra-fast (down to 400 ps) bipolar magnetization switching of a three-terminal perpendicular Ta/FeCoB/MgO/FeCoB magnetic tunnel junction. The critical current densi…
Interplay between Orbital Magnetic Moment and Crystal Field Symmetry: Fe atoms on MgO
S. Baumann, F. Donati, S. Stepanow +15
We combine density functional theory, x-ray magnetic circular dichroism, multiplet calculations, and scanning tunneling spectroscopy to assess the magnetic properties of Fe atoms a…
Susbtrate-Induced Stabilization and Reconstruction of Zigzag Edges in Graphene Nanoislands on Ni(111)
A. Garcia-Lekue, M. Olle, D. Sanchez-Portal +4
We combine experimental observations by scanning tunneling microscopy (STM) and density functional theory (DFT) to reveal the most stable edge structures of graphene on Ni(111) as…
Unidirectional spin Hall magnetoresistance in ferromagnet/normal metal bilayers
Can Onur Avci, Kevin Garello, Abhijit Ghosh +3
Magnetoresistive effects are usually invariant upon inversion of the magnetization direction. In noncentrosymmetric conductors, however, nonlinear resistive terms can give rise to…