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Coherent Structural Dynamics of a Prototypical Charge-Density-Wave-to-Metal Transition

Coherent Structural Dynamics of a Prototypical Charge-Density-Wave-to-Metal Transition

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HUBER, Tim, Simon O. MARIAGER, Andres FERRER, Hanjo SCHÄFER, Jeremy A. JOHNSON, Sebastian GRÜBEL, Andre LÜBCKE, Lucas HUBER, Teresa KUBACKA, Christian DORNES, Claire LAULHÉ, Sylvain RAVY, Gerhard INGOLD, Paul BEAUD, Jure DEMSAR, Steven L. JOHNSON, 2014. Coherent Structural Dynamics of a Prototypical Charge-Density-Wave-to-Metal Transition. In: Physical Review Letters. 113(2), 026401. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.113.026401

@article{Huber2014Coher-29751, title={Coherent Structural Dynamics of a Prototypical Charge-Density-Wave-to-Metal Transition}, year={2014}, doi={10.1103/PhysRevLett.113.026401}, number={2}, volume={113}, issn={0031-9007}, journal={Physical Review Letters}, author={Huber, Tim and Mariager, Simon O. and Ferrer, Andres and Schäfer, Hanjo and Johnson, Jeremy A. and Grübel, Sebastian and Lübcke, Andre and Huber, Lucas and Kubacka, Teresa and Dornes, Christian and Laulhé, Claire and Ravy, Sylvain and Ingold, Gerhard and Beaud, Paul and Demsar, Jure and Johnson, Steven L.}, note={Article Number: 026401} }

Laulhé, Claire Dornes, Christian Laulhé, Claire Johnson, Steven L. 2015-02-04T09:12:21Z Using femtosecond time-resolved x-ray diffraction, we directly monitor the coherent lattice dynamics through an ultrafast charge-density-wave-to-metal transition in the prototypical Peierls system K<sub>0.3</sub>MoO<sub>3</sub> over a wide range of relevant excitation fluences. While in the low fluence regime we directly follow the structural dynamics associated with the collective amplitude mode; for fluences above the melting threshold of the electronic density modulation we observe a transient recovery of the periodic lattice distortion. We can describe these structural dynamics as a motion along the coordinate of the Peierls distortion triggered by the prompt collapse of electronic order after photoexcitation. The results indicate that the dynamics of a structural symmetry-breaking transition are determined by a high-symmetry excited state potential energy surface distinct from that of the initial low-temperature state. Johnson, Jeremy A. Coherent Structural Dynamics of a Prototypical Charge-Density-Wave-to-Metal Transition Ravy, Sylvain Schäfer, Hanjo Johnson, Jeremy A. Kubacka, Teresa Ferrer, Andres Ingold, Gerhard Mariager, Simon O. eng Demsar, Jure Mariager, Simon O. Johnson, Steven L. Lübcke, Andre Beaud, Paul Huber, Lucas Demsar, Jure Huber, Tim Dornes, Christian Ravy, Sylvain Huber, Lucas Ingold, Gerhard 2015-02-04T09:12:21Z Grübel, Sebastian 2014 Huber, Tim Beaud, Paul Kubacka, Teresa Lübcke, Andre Schäfer, Hanjo Grübel, Sebastian Ferrer, Andres

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