Forthcoming Events

11.07.2022 - 15.07.2022, Celeste Hotel, on UCF main campus, Orlando, Florida
05.09.2022 - 09.09.2022, Iseolago hotel, Iseo, Italy.

News

MUST2022 Conference- succesfully concluded
New scientific highlights- by MUST PIs Chergui and Richardson
FELs of Europe prize for Jeremy Rouxel- “Development or innovative use of advanced instrumentation in the field of FELs”
Ruth Signorell wins Doron prizefor pioneering contributions to the field of fundamental aerosol science
New FAST-Fellow Uwe Thumm at ETH- lectures on Topics in Femto- and Attosecond Science
International Day of Women and Girls in Science- SSPh asked female scientists about their experiences
New scientific highlight- by MUST PIs Milne, Standfuss and Schertler
EU XFEL Young Scientist Award for Camila Bacellar,beamline scientist and group leader of the Alvra endstation at SwissFEL
Prizes for Giulia Mancini and Rebeca Gomez CastilloICO/IUPAP Young Scientist Prize in Optics & Ernst Haber 2021
Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List- for the development of asymmetric organocatalysis
NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules
#NCCRWomen- NCCR MUST celebrates 50 years women’s right to vote in Switzerland
Kick-Off dynaMENT Mentoring for Women in Natural Sciences- with Ursula Keller as plenary speaker

Optical control of vibrational dynamics from an ultrafast phase transition

June 9, 2019

Engineering decoherence via light

Femtosecond time-resolved x-ray diffraction is employed to study the dynamics of the periodic lattice distortion (PLD) associated with the charge-density wave in K0.3MoO3. Using a multipulse scheme we show the ability to extend the lifetime of coherent oscillations of the PLD about the undistorted structure through reexcitation of the electronic states. This suggests that it is possible to enter a regime where the symmetry of the potential energy landscape corresponds to the high-symmetry phase but the scattering pathways that lead to the damping of coherent dynamics are still controllable by altering the electronic state population. The demonstrated control over the coherence time offers different routes for the manipulation of coherent lattice states.



Reference: M. J. Neugebauer, T. Huber, M. Savoini, E. Abreu, V. Esposito, M. Kubli, L. Rettig, E. Bothschafter, S. Grübel, T. Kubacka, J. Rittmann, G. Ingold, P. Beaud, D. Dominko, J. Demsar, and S. L. Johnson, Optical control of vibrational coherence triggered by an ultrafast phase transition, Phys. Rev. B 99, 220302(R)  (DOI: https://doi.org/10.1103/PhysRevB.99.220302)
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