Ultrafast dynamics of localized magnetic moments in the unconventional Mott insulator Sr2IrO4
Publication Type
Journal Article
Authors
Krupin, O, G.L Dakovski, B.J Kim, J.W Kim, J Kim, S Mishra, Y.-D Chuang, C.R Serrao, W.-S Lee, W.F Schlotter, M.P Minitti, D Zhu, D Fritz, M Chollet, Ramamoorthy Ramesh, S.L Molodtsov, J.J Turner
DOI
Abstract
We report a time-resolved study of the ultrafast dynamics of the magnetic moments formed by the states in Sr2IrO4 by directly probing the localized iridium 5d magnetic state through resonant x-ray diffraction. Using optical pump-hard x-ray probe measurements, two relaxation time scales were determined: a fast fluence-independent relaxation is found to take place on a time scale of 1.5 ps, followed by a slower relaxation on a time scale of 500 ps-1.5 ns. © 2016 IOP Publishing Ltd.
Journal
Journal of Physics Condensed Matter
Volume
28
Year of Publication
2016
ISSN
09538984
Notes
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