Charge density wave melting in TiSe<sub>2</sub>
ORAL
Abstract
TiSe2 is an intriguing material that hosts a (2x2x2) charge density wave (CDW) phase below 200K and which can become superconducting when breaking the CDW long range order by elevated pressures or Cu doping. The ideal tool to study such a material is time and angular resolved photoelectron spectroscopy (trARPES), as it allows to directly acess the dynamics of the two spectral representation of the CDW state, the folded Se4p* band and the CDW gap. In this work we study these quantities in dependence of pump fluence, going from a perturbation of the CDW order in the low fluence regime to a complete phase transition in the high fluence regime.
*This work was primarily funded by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under contract no. DE-AC02-05CH11231 (Ultrafast Materials Science program KC2203).
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Publication: Huber et al., Sci. Rep. 12 (2022)
Huber et al., JPCS 168 (2022)
Presenters
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Maximilian Huber
- Lawrence Berkeley National Laboratory