Photoinduced dynamics in the charge density wave compound 4HB-TaSe2

Erasmus, Nicolas; Eichberger, Maximilian; Haupt, Kerstin; Boshoff, Ilana; Kassier, Günther; Bimurske, Reinhard; Berger, Helmuth; Demsar, Jure GND; Schwoerer, Heinrich GND

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.

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Erasmus, Nicolas / Eichberger, Maximilian / Haupt, Kerstin / et al: Photoinduced dynamics in the charge density wave compound 4HB-TaSe2. 2013.

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