Junyeon Kim
YOU?
Author Swipe
View article: Nonlocal electrical detection of reciprocal orbital Edelstein effect
Nonlocal electrical detection of reciprocal orbital Edelstein effect Open
The orbital Edelstein effect and orbital Hall effect, where a charge current induces a nonequilibrium orbital angular momentum, offer a promising method for efficiently manipulating nanomagnets using light elements. Despite extensive resea…
View article: Impact of GdOx insertion on magnetic anisotropy and damping in double-barrier magnetic stacks
Impact of GdOx insertion on magnetic anisotropy and damping in double-barrier magnetic stacks Open
For the realization of high-performance spintronic devices, the development of novel magnetic materials/structures satisfying both large perpendicular magnetic anisotropy (PMA) and ultra-low Gilbert damping is strongly desired. Here, we sh…
View article: Nonlocal Electrical Detection of Reciprocal Orbital Edelstein Effect
Nonlocal Electrical Detection of Reciprocal Orbital Edelstein Effect Open
Spin-Orbitronics leverages the spin and orbital degrees of freedom in solids for information processing. The orbital Edelstein effect and orbital Hall effect, where the charge current induces a nonequilibrium orbital angular momentum, offe…
View article: Nonlocal Electrical Detection of Reciprocal Orbital Edelstein Effect
Nonlocal Electrical Detection of Reciprocal Orbital Edelstein Effect Open
Spin-Orbitronics leverages the spin and orbital degrees of freedom in solids for information processing1,2. The orbital Edelstein effect3–5 and orbital Hall effect1,6–9, where the charge current induces a nonequilibrium orbital angular mom…
View article: Valley-Selective Phonon-Magnon Scattering in Magnetoelastic Superlattices
Valley-Selective Phonon-Magnon Scattering in Magnetoelastic Superlattices Open
Phonons and magnons are engineered by periodic potential landscapes in phononic and magnonic crystals, and their combined studies may enable valley phonon transport tunable by the magnetic field. Through nonreciprocal surface acoustic wave…
View article: Oxide layer dependent orbital torque efficiency in ferromagnet/Cu/Oxide heterostructures
Oxide layer dependent orbital torque efficiency in ferromagnet/Cu/Oxide heterostructures Open
The utilization of orbital transport provides a versatile and efficient spin manipulation mechanism. As interest in orbital-mediated spin manipulation grows, we face a new issue to identify the underlying physics that determines the effici…
View article: Valley-Selective Phonon-Magnon Scattering in Magnetoelastic Superlattices
Valley-Selective Phonon-Magnon Scattering in Magnetoelastic Superlattices Open
Phonons and magnons are engineered by periodic potential landscapes in phononic and magnonic crystals, and their combined studies may enable valley phonon transport tunable by the magnetic field. Through nonreciprocal surface acoustic wave…
View article: Emerging effects of oxygen accumulation on orbital torque
Emerging effects of oxygen accumulation on orbital torque Open
The orbital angular momentum is an electron’s essential degree of freedom and provides an alternative opportunity for the further development of spintronics. Recent studies suggest orbital transport as a potential tool to realize practical…
View article: Phenomenological model for the direct and inverse Edelstein effects
Phenomenological model for the direct and inverse Edelstein effects Open
We have developed a phenomenological model that connects the direct and the inverse Edelstein effects. Our model implies a trade-off relation between the conversion coefficients for the direct and inverse effects. Thus, a large conversion …
View article: Spintronic devices for energy-efficient data storage and energy harvesting
Spintronic devices for energy-efficient data storage and energy harvesting Open
The current data revolution has, in part, been enabled by decades of research into magnetism and spin phenomena. For example, milestones such as the observation of giant magnetoresistance, and the resulting development of the spin-valve re…
View article: Non-trivial charge-to-spin conversion in ferromagnetic metal/Cu/Al2O3 by orbital transport
Non-trivial charge-to-spin conversion in ferromagnetic metal/Cu/Al2O3 by orbital transport Open
Efficient spin/charge interconversion is desired to develop innovative spin-based devices. So far, the interconversion has been performed by using heavy atomic elements, strong spin-orbit interaction of which realizes the interconversion t…
View article: Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces
Evaluation of bulk-interface contributions to Edelstein magnetoresistance at metal/oxide interfaces Open
We report a systematic study on Edelstein magnetoresistance (Edelstein MR) in\nCo25Fe75/Cu/Bi2O3 heterostructures with a strong spin-orbit interaction at the\nCu/Bi2O3 interface. We succeed in observing a significant dependence of the\nEde…
View article: Spin–Orbit Effects in CoFeB/MgO Heterostructures with Heavy Metal Underlayers
Spin–Orbit Effects in CoFeB/MgO Heterostructures with Heavy Metal Underlayers Open
We study effects originating from the strong spin–orbit coupling in CoFeB/MgO heterostructures with heavy metal (HM) underlayers. The perpendicular magnetic anisotropy at the CoFeB/MgO interface, the spin Hall angle of the heavy metal laye…
View article: Spin-orbit torque in Cr/CoFeAl/MgO and Ru/CoFeAl/MgO epitaxial magnetic heterostructures
Spin-orbit torque in Cr/CoFeAl/MgO and Ru/CoFeAl/MgO epitaxial magnetic heterostructures Open
We study the spin-orbit torque (SOT) effective fields in Cr/CoFeAl/MgO and Ru/CoFeAl/MgO magnetic heterostructures using the adiabatic harmonic Hall measurement. High-quality perpendicular-magnetic-anisotropy CoFeAl layers were grown on Cr…
View article: Spin Hall Magnetoresistance in Metallic Bilayers
Spin Hall Magnetoresistance in Metallic Bilayers Open
Spin Hall magnetoresistance (SMR) is studied in metallic bilayers that consist of a heavy metal (HM) layer and a ferromagnetic metal (FM) layer. We find a nearly tenfold increase of SMR in W/CoFeB compared to previously studied HM/ferromag…