172 citations · 521 across the 11 of their papers we have counts for
7 papers · 1 filter
Bright and dark states of two distant macrospins strongly coupled by phonons
Kyongmo An, Ryuhei Kohno, Artem N. Litvinenko +10
We study the collective dynamics of two distant magnets coherently coupled by acoustic phonons that are transmitted through an intercalated crystal. By tuning the ferromagnetic res…
Short-range Thermal Magnon Diffusion in Magnetic Garnet
Kyongmo An, Ryuhei Kohno, Nicolas Thiery +8
Using the spin Seebeck effect (SSE), we study the propagation distance of thermal spin currents inside a magnetic insulator thin film in the short-range regime. We disambiguate spi…
Interfacial Control of Dzyaloshinskii Moriya Interaction in Heavy Metal_Ferromagnetic Metal Thin Film Heterostructures
Xin Ma, Guoqiang Yu, Xiang Li +8
The interfacial Dzyaloshinskii Moriya Interaction (DMI) in ultrathin magnetic thin film heterostructures provides a new approach for controlling spin textures on mesoscopic length…
Current Control of Magnetic Anisotropy via Stress in a Ferromagnetic Metal Waveguide
Kyongmo An, Xin Ma, Chi-Feng Pai +6
We demonstrate that in-plane charge current can effectively control the spin precession resonance in an Al2O3/CoFeB/Ta heterostructure. Brillouin Light Scattering (BLS) was used to…
Magnons and Phonons Optically Driven Out of Local Equilibrium in a Magnetic Insulator
Kyongmo An, Kevin S. Olsson, Annie Weathers +9
Magnons are the energy quanta of fundamental spin excitations, namely spin waves, and they can make a considerable contribution to energy transport in some magnetic materials in a…
Control of Propagating Spin Waves via Spin Transfer Torque in a Metallic Bilayer Waveguide
Kyongmo An, Daniel R. Birt, Chi-Feng Pai +4
We investigate the effect of a direct current on propagating spin waves in a CoFeB/Ta bilayer structure. Using the micro-Brillouin light scattering technique, we observe that the s…
Brillouin Light Scattering Spectra as local Temperature Sensors for Thermal Magnons and Acoustic Phonons
Daniel R. Birt, Kyongmo An, Annie Weathers +3
We demonstrate the use of the micro-Brillouin light scattering (micro-BLS) technique as a local temperature sensor for magnons in a Permalloy thin film and phonons in the glass sub…