Charge-density wave amplitude mode in 1T-TiSe2 probed by core-level transient absorption spectroscopy
The International Conference on Ultrafast Phenomena (UP) 2022（2022）
Abstract
We use high-sensitivity ultrafast high-harmonic spectroscopy to track coherent phonons in the charge-density wave phase of 1T-TiSe2. Using harmonics near the Ti-M-edge, we distinguish spectral signatures of the 3.3-THz amplitude mode and 6-THz optical phonons.
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Key words
absorption,charge-density,t-tise,core-level
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