EPJ Web of Conferences
Volume 41, 2013XVIIIth International Conference on Ultrafast Phenomena
|Number of page(s)||3|
|Section||Correlated Electron Systems, Magnetization, and Spin Dynamics|
|Published online||13 March 2013|
Photoinduced Dynamics in the Charge Density Wave Compound 4HB-TaSe2
1 Laser Research Institute, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
2 Department of Physics and Center of Applied Photonics and Zukunftskolleg, University of Konstanz, D-78457 Konstanz, Germany
3 Physics Department, EPFL, CH-1015 Lausanne, Switzerland
We report on ultrafast photoindued charge density wave (CDW) dynamics in the transition-metal dichalcogenide 4Hb-TaSe2, studied with ultrafast electron diffraction. Fluence dependence of the lattice superstructure suppression show a phase transition from the commensurate to the incommensurate phase of 4Hb-TaSe2. Unusually long recovery times of perturbed charge density waves indicate th importance of a coupling between the two dimensional CDWs.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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