Speaker
Prof.
Yoshinori Tokura
(RIKEN, Japan)
Description
Topology of spin texture in a solid is a source of emergent
electromagnetic properties and functions. Under strong
spin-charge coupling as well as relativistic spin-orbit
coupling, topological spin textures give birth to exotic
phenomena, such as colossal magnetoresistance,
multiferroicity (magnetic ferroelectricity), skyrmions,
topological insulator/semimetal, quantized-
anomalous/topological Hall effects, etc. In particular, non-
collinear and/or non-coplanar spin textures may generate
the fictitious (emergent) magnetic and electric fields acting
on the electrons, thus hosting the enhanced magneto-
electric effect and topological Hall effects. Emergent
electromagnetism in topological magnets and its possible
application are presented.
