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: Chapter in Book/Report/Conference proceedingConference contribution

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
Title of host publicationEPJ Web of Conferences
PublisherEDP Sciences
Volume205
Edition04008
DOIs
Publication statusPublished - 16 Apr 2019

Publication series

NameEPJ Web of Conferences
PublisherEDP Sciences
ISSN (Print)2101-6275

Keywords

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

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