134 citations · 334 across the 12 of their papers we have counts for
12 papers
Structural and Magnetic Properties of Pt/Co/Mn-Based Multilayers
Martin Lonsky, Myoung-Woo Yoo, Yi-Siou Huang +3
Magnetic multilayers are a rich class of materials systems with numerous highly tunable physical parameters that determine both their magnetic and electronic properties. Here we pr…
Nanocontact vortex oscillators based on CoMnGe pseudo-spin valves
Jérémy Létang, Claudia de Melo, Charles Guillemard +9
We present an experimental study of vortex dynamics in magnetic nanocontacts based on pseudo spin valves comprising the CoMnGe Heusler compound. The films were grown by molecul…
Analytical model of the inertial dynamics of a magnetic vortex
Myoung-Woo Yoo, Francesca Mineo, Joo-Von Kim
We present an analytical model to account for the inertial dynamics of a magnetic vortex. The model is based on a deformation of the core profile based on the Döring kinetic field,…
Pattern generation and symbolic dynamics in a nanocontact vortex oscillator
Myoung-Woo Yoo, Damien Rontani, Jérémy Létang +6
Harnessing chaos or intrinsic nonlinear behaviours from dynamical systems is a promising avenue for the development of unconventional information processing technologies. However,…
Modulation and phase-locking in nanocontact vortex oscillators
Jérémy Létang, Sébastien Petit-Watelot, Myoung-Woo Yoo +4
We have conducted experiments to probe how the dynamics of nanocontact vortex oscillators can be modulated by an external signal. We explore the phase-locking properties in both th…
Chaos in Magnetic Nanocontact Vortex Oscillators
Thibaut Devolder, Damien Rontani, Sébastien Petit-Watelot +10
We present an experimental study of spin-torque driven vortex self-oscillations in magnetic nanocontacts. We find that above a certain threshold in applied currents, the vortex gyr…
Current-driven skyrmion expulsion from magnetic nanostrips
Myoung-Woo Yoo, Vincent Cros, Joo-Von Kim
We study the current-driven skyrmion expulsion from magnetic nanostrips using micromagnetic simulations and analytic calculations. We explore the threshold current density for the…
Current-driven skyrmion dynamics in disordered films
Joo-Von Kim, Myoung-Woo Yoo
A theoretical study of the current-driven dynamics of magnetic skyrmions in disordered perpendicularly-magnetized ultrathin films is presented. The disorder is simulated as a granu…
Resonantly exited precession motion of three-dimensional vortex core in magnetic nanospheres
Sang-Koog Kim, Myoung-Woo Yoo, Jehyun Lee +5
We found resonantly excited precession motions of a three-dimensional vortex core in soft magnetic nanospheres and controllable precession frequency with the sphere diameter 2R, as…
Edge-Soliton-Mediated Vortex-Core Reversal Dynamics
Ki-Suk Lee, Myoung-Woo Yoo, Youn-Seok Choi +1
We report a new reversal mechanism of magnetic vortex cores in nanodot elements driven by out-of-plane currents, occurring through two coupled edge-solitons via dynamic transformat…
Polarization-selective vortex-core switching by orthogonal Gaussian-pulse currents
Young-Sang Yu, Ki-Suk Lee, Hyunsung Jung +6
We experimentally demonstrate low-power-consumption vortex-core switching in magnetic nanodisks using tailored rotating magnetic fields that are produced with orthogonal and unipol…
Criterion for transformation of transverse domain wall to vortex or antivortex wall in soft magnetic thin-film nanostripes
Youn-Seok Choi, Sang-Koog Kim, Jun-Young Lee +3
We report on the criterion for the dynamic transformation of the internal structure of moving domain walls (DWs) in soft magnetic thin-film nanostripes above the Walker threshold f…