Photoinduced Dynamics in the Charge Density Wave Compound 4HB-TaSe2

Autor:	N. Erasmus, Ilana Boshoff, Heinrich Schwoerer, Maximilian Eichberger, Helmuth Berger, K. Haupt, Jure Demsar, G. H. Kassier, Reinhard Bimurske
Jazyk:	angličtina
Rok vydání:	2013
Předmět:	Physics Phase transition Condensed matter physics Lattice (order) Ultrafast electron diffraction QC1-999 Charge density Condensed Matter::Strongly Correlated Electrons ddc:530 Charge density wave Fluence Ultrashort pulse
Zdroj:	EPJ Web of Conferences, Vol 41, p 03024 (2013)
Popis:	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. published
Databáze:	OpenAIRE
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