Charge-density-wave in 1T-TiSe2: exciton-phonon separation by femtosecond valence band dynamics

Hamoon Hedayat, Davide Bugini, Sara Karbassi, Sven Friedemann, Jasper van Wezel, Stephen Clark, Charles Sayers, Enrico Da Como, Giulio Cerullo, Claudia Dallera, Ettore Carpene

Research output: Contribution to journalArticle

Abstract

We investigate the driving mechanism leading to charge-density-wave transition in 1T-TiSe2 single crystals. Our results show that both exciton instability and phonons cooperate to develop the charge ordered phase below 202 K.
Original languageEnglish
Article number04008
JournalEPJ Web of Conferences
Volume205
Issue number04008
DOIs
Publication statusPublished - 16 Apr 2019

Keywords

  • Charge density waves
  • Transition metal dichalcogenides
  • Phase transitions
  • Ultrafast spectroscopy
  • Excitons

Cite this

Hedayat, H., Bugini, D., Karbassi, S., Friedemann, S., van Wezel, J., Clark, S., ... Carpene, E. (2019). Charge-density-wave in 1T-TiSe2: exciton-phonon separation by femtosecond valence band dynamics. EPJ Web of Conferences, 205(04008), [04008]. https://doi.org/10.1051/epjconf/201920504008