2 papers
physics.optics2025
Topological invariants and topological charges in photonic systems
Kristian Arjas, Grazia Salerno, Päivi Törmä
Topology in photonics comes in two distinct flavors: global and local. Global topology considers invariants that are obtained by integrating over the energy band, whereas local top…
cond-mat.mes-hall2018
Propagating spin waves in nanometer-thick yttrium iron garnet films: Dependence on wave vector, magnetic field strength and angle
Huajun Qin, Sampo J. Hämäläinen, Kristian Arjas +2
We present a comprehensive investigation of propagating spin waves in nanometer-thick yttrium iron garnet (YIG) films. We use broadband spin-wave spectroscopy with integrated copla…