Speaker
Rafael T. Winkler
(ETH Zürich)
Description
Blue Bronze ($K_{0.3}MoO_3$) is a quasi 1D material exhibiting a charge-density-wave (CDW) with a periodic lattice distortion (PLD). In a time resolved x-ray experiment at SwissFEL, we study the dynamics of the PLD by pumping $K_{0.3}MoO_3$ with short laser pulses and probing it using x-ray diffraction. We construct reciprocal space maps (RSM) of superlattice reflections at different delays. The RSMs indicate a transient but not persistent flip of the phase of the CDW. We attribute the suppression of the diffracted x-ray intensity after this flip to a fast decoherence of the CDW driven by pinning of the phase of the CDW in the material indicating an order-disorder like phase transition.
Author
Rafael T. Winkler
(ETH Zürich)
Co-authors
Abhishek Nag
(SwissFEL, Paul Scherrer Institute, Villigen)
Alexander R. Oggenfuss
(SwissFEL, Paul Scherrer Institute, Villigen)
Christopher Arrell
(SwissFEL, Paul Scherrer Institute, Villigen)
Danylo Babich
(SwissFEL, Paul Scherrer Institute, Villigen)
Davide Soranzio
(ETH Zürich)
Edwin J. Divall
(SwissFEL, Paul Scherrer Institute, Villigen)
Elsa Abreu
(ETH Zürich)
Henrik Lemke
(SwissFEL, Paul Scherrer Institute, Villigen)
Janine Zemp (Dössegger)
(ETH Zürich)
Jure Demsar
(Faculty Institute of Physics, Johannes Gutenberg-University Mainz)
Larissa Boie
(ETH Zurich)
Mathias Sander
(SwissFEL, Paul Scherrer Institute, Villigen)
Matteo Savoini
(ETH Zürich)
Paul Beaud
(SwissFEL, Paul Scherrer Institute, Villigen)
Roman Mankowsky
(SwissFEL, Paul Scherrer Institute, Villigen)
Sabina Gurung
(ETH Zürich)
Samuel Norton
(ETH Zürich)
Serhane Zerdane
(SwissFEL, Paul Scherrer Institute, Villigen)
Simone Biasco
(ETH Zürich)
Steven Johnson
(ETH Zürich)
Tim Suter
(ETH Zürich)
Urs Staub
(SwissFEL, Paul Scherrer Institute, Villigen)
Vladimir Ovuka
(ETH Zürich)
Yunpei Deng
(SwissFEL, Paul Scherrer Institute, Villigen)
