273 citations · 1.2k across the 11 of their papers we have counts for
11 papers
Spontaneous Transition to a Correlated Phase of Skyrmions Observed in Real Space
John N. Moore, Hikaru Iwata, Junichiro Hayakawa +4
We conduct photoluminescence microscopy that is sensitive to both electron and nuclear spin polarization to investigate the changes that occur in the magnetic ordering in the vicin…
Hyperfine-controlled domain-wall motion observed in real space and time
John N. Moore, Junichiro Hayakawa, Takaaki Mano +2
We perform real-space imaging of propagating magnetic domains in the fractional quantum Hall system using spin-sensitive photoluminescence microscopy. The propagation is continuous…
Non-equilibrium fractional quantum Hall states visualized by optically detected MRI
John N. Moore, Junichiro Hayakawa, Takaaki Mano +2
Using photoluminescence microscopy enhanced by MRI, we visualize in real space both electron and nuclear polarization occurring in non-equilibrium FQH liquids. We observe stripe-li…
Tunneling anisotropic magnetoresistance of NiFe/IrMn/MgO/Pt stack: An antiferromagnet based spin-valve
B. G. Park, J. Wunderlich, X. Marti +9
Spin-valve is a microelectronic device in which high and low resistance states are realized by utilizing both charge and spin of carriers. Spin-valve structures used in modern hard…
Effect of high annealing temperature on giant tunnel magnetoresistance ratio of CoFeB/MgO/CoFeB magnetic tunnel junctions
Jun Hayakawa, Shoji Ikeda, Young Min Lee +2
We report tunnel magnetoresistance (TMR) ratios as high as 472% at room temperature and 804% at 5 K in pseudo-spin valve (SV) CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJs) annea…
Current-induced magnetization switching in MgO barrier based magnetic tunnel junctions with CoFeB/Ru/CoFeB synthetic ferrimagnetic free layer
Jun Hayakawa, Shoji Ikeda, Young Min Lee +5
We report the intrinsic critical current density (Jc0) in current-induced magnetization switching and the thermal stability factor (E/kBT, where E, kB, and T are the energy potenti…