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SUMMARY:JCMS: Topological magnons and their cousins\, and beyond
DTSTART:20260525T083000Z
DTEND:20260525T100000Z
DTSTAMP:20260607T074200Z
UID:indico-event-9734@indico.fysik.su.se
DESCRIPTION:Speakers: Se Kwon Kim (KAIST)\n\nAbstract: Magnons with nontri
 vial Berry curvatures have emerged as a new research area in magnetism and
  spintronics due to their fundamental interest as well as practical utilit
 ies such as back-scattering-free spin-transport channels of topological ma
 gnons. In this talk\, we will discuss recent developments in the Berry-cur
 vature physics of magnons and their related cousins in two-dimensional (2D
 ) magnets. We will begin by discussing one of the first magnonic topologic
 al insulators realized in a honeycomb 2D ferromagnet such as CrI3\, which 
 is shown to give rise to the thermal Hall effect via the finite Berry curv
 ature of magnons [1]. Recently\, the field of topological magnons has been
  expanded into the field of topological bosons beyond simple magnons. As o
 ne concrete example\, we will introduce a new concept of topologically non
 -trivial magnon-phonon hybridized mode called a topological magnon-polaron
 \, which can be realized in a 2D ferromagnet [2] and antiferromagnet [3] s
 uch as MnPS3 via generic magnetoelastic coupling. In the last part of the 
 talk\, we will discuss the recently-discovered relation between the Berry 
 curvature of magnons and the scalar spin chirality in 2D magnets\, which g
 ives rise to the intrinsic Hall effect of the scalar spin chirality withou
 t any spin-orbit coupling [4\, 5]. The talk will be concluded with a futur
 e outlook on the research of topological magnons and beyond.\n\nhttps://in
 dico.fysik.su.se/event/9734/
LOCATION:Albano 3: 6228 - Mega (22 seats) (Albano Building 3)
URL:https://indico.fysik.su.se/event/9734/
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