Title: Spin wave dynamics in ultrathin yttriumiron garnet measured with x-ray microscopy Speaker: Joe Bailey, from the PSI (Switzerland) Time: 10:30-11am Fika / 11-12am Talk Abstract: Magnonics, the study and development of devices utilising collective spin excitations, is a rapidly growing field, covering both fundamental topics (antiferromagnetism, quasiparticle condensates) and technological applications (MRAM, spintronics). Yttrium […]

Details: TBA https://www.kva.se/en/pressrum

Abstract: Weyl points trapped within a C_2T-symmetric plane (C2 = 180 degrees rotation, and T = time reversal) possess non-Abelian topological charges on top of their chirality. E.g. three-level systems realize the quaternion group. This picture requires to go beyond the modeling of a band structure as a Grassmannian (where a single spectral gap is […]