Charge-density-wave in 1T-TiSe2: exciton-phonon separation by femtosecond valence band dynamics
1 Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy
2 HH Wills Physics Laboratory, University of Bristol, BS8 1TL Bristol, UK
3 Institute for Theoretical Physics, Institute of Physics, University of Amsterdam, 1090 GL Amsterdam, The Netherlands
4 Department of Physics and Centre for Photonics and Photonic Materials, University of Bath, BA2 7AY Bath, UK
5 IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy
* Corresponding author: email@example.com
Published online: 16 April 2019
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.
© The Authors, published by EDP Sciences, 2019
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