Time-resolved resonant soft x-ray diffraction with free-electron lasers  femtosecond dynamics across the Verwey transition in magnetite

Resonant soft x-ray diffraction (RSXD) with femtosecond (fs) time resolution is a powerful tool for disentangling the interplay between different degrees of freedom in strongly correlated electron materials. It allows addressing the coupling of particular degrees of freedom upon an external selective perturbation, e. g., by an optical or infrared laser pulse. Here, we report a time-resolved RSXD experiment from the prototypical correlated electron material magnetite using soft x-ray pulses from the free-electron laser FLASH in Hamburg. We observe ultrafast melting of the charge-orbital order leading to the formation of a transient phase, which has not been observed in equilibrium.

Metadaten
Author details:	N. Pontius, T. Kachel, C. Schüssler-Langeheine, W. F. Schlotter, Martin Beye ORCiD GND, Florian Sorgenfrei ORCiD GND, C. F. Chang, Alexander Föhlisch ORCiD GND, W. Wurth, P. Metcalf, I. Leonov, A. Yaresko, N. Stojanovic, Martin Berglund, N. Guerassimova, S. Duesterer, H. Redlin, H. A. Duerr
DOI:	https://doi.org/10.1063/1.3584855
ISSN:	0003-6951
Title of parent work (English):	Applied physics letters
Publisher:	American Institute of Physics
Place of publishing:	Melville
Publication type:	Article
Language:	English
Year of first publication:	2011
Publication year:	2011
Release date:	2017/03/26
Volume:	98
Issue:	18
Number of pages:	3
Funding institution:	German Bundesministerium fur Bildung und Forschung [FSP 301]; DFG [SFB 608, SFB 484]; European Union; U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-76SF00515]
Organizational units:	Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer review:	Referiert