Speaker
Dr
Chennan Wang
(Paul Scherrer Institute)
Description
We highlight the current-induced modification of magnetism in the prototypical 5d Mott insulator Sr2IrO4 whose moments are entangled combinations of spins and orbitals. Based on an earlier report, oxygen octahedra can be rotated by applying electric current. Using muon spin spectroscopy, we further resolved an uncharted rotation of the magnetic moments. Such change is likely beyond the locking of iridium magnetic moments to the correlated rotation of oxygen octahedra and distinct from the strain-induced effect under the equilibrium condition. We show that a new state is created under the flow of energy in terms of electric current, which provides a way to switch the properties of this iridate on-demand.
Authors
Dr
Chennan Wang
(Paul Scherrer Institute)
Dr
Alberto Hernandez-Melian
(Durham University)
Dr
Hengdi Zhao
(University of Colorado at Boulder)
Prof.
Christian Bernhard
(University of Fribourg)
Prof.
Tom Lancaster
(Durham University)
Dr
Hubertus Luetkens
(Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI)
Prof.
Gang Cao
(University of Colorado at Boulder)
