7 citations · 7 across the 1 of their papers we have counts for
7 papers
Excitation and relaxation dynamics of spin-waves triggered by ultrafast photo-induced demagnetization in a ferrimagnetic insulator
Yusuke Hashimoto, Koji Sato, Tom H. Johansen +1
Excitation and propagation dynamics of spin waves in an iron-based garnet film under out-of-plane magnetic field were investigated by time-resolved magneto-optical imaging. The exp…
Magnetization Dynamics in Holographic Ferromagnets: Landau-Lifshitz Equation from Yang-Mills Fields
Naoto Yokoi, Koji Sato, Eiji Saitoh
We introduce a new approach to understand magnetization dynamics in ferromagnets based on the holographic realization of ferromagnets. A Landau-Lifshitz equation describing the mag…
The Krein-Schrödinger Formalism of Bosonic BdG and Certain Classical Systems and Their Topological Classification
Max Lein, Koji Sato
To understand recent works on classical and quantum spin equations and their topological classification, we develop a unified mathematical framework for bosonic BdG systems and ass…
Topologically nontrivial magnonic solitons
Mehrdad Elyasi, Koji Sato, Gerrit E. W. Bauer
The intrinsic non-linearities of the spin dynamics in condensed matter systems give rise to a rich phenomenology that can be strongly affected by topology. Here we study formation…
Antiferromagnetic Interorbital Spin-Exchange Interaction of Yb
Koki Ono, Jun Kobayashi, Yoshiki Amano +2
We report on the investigation of the scattering properties between the ground state and the metastable state of the fermionic isotope of Yb. We successfull…
Solitons in one-dimensional mechanical linkage
Koji Sato, Ryokichi Tanaka
It has been observed that certain classical chains admit topologically protected zero-energy modes that are localized on the boundaries. The static features of such localized modes…