Clocking the Melting Transition of Charge and Lattice Order in 1T−TaS2 with 
Ultrafast Extreme-Ultraviolet Angle-Resolved Photoemission Spectroscopy

Petersen, Jesse C.; Kaiser, Stefan; Dean, N.; Simoncig, Alberto; Liu, Haiyun; Cavalieri, Adrian L.; Cacho, C.; Turcu, I. C. E.; Springate, E.; Frassetto, F.; Poletto, L.; Dhesi, S. S.; Berger, H.; Cavalleri, Andrea

doi:10.1103/PhysRevLett.107.177402

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Clocking the Melting Transition of Charge and Lattice Order in 1T−TaS₂ with Ultrafast Extreme-Ultraviolet Angle-Resolved Photoemission Spectroscopy

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

http://dx.doi.org/10.1103/PhysRevLett.107.177402
(Publisher version)

http://arxiv.org/abs/1010.5027
(Preprint)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

PhysRevLett.107.177402.pdf
(Publisher version), 393KB

Supplementary Material (public)

There is no public supplementary material available

Citation

Petersen, J. C., Kaiser, S., Dean, N., Simoncig, A., Liu, H., Cavalieri, A. L., et al. (2011). Clocking the Melting Transition of Charge and Lattice Order in 1T−TaS₂ with Ultrafast Extreme-Ultraviolet Angle-Resolved Photoemission Spectroscopy. Physical Review Letters, 107(17): 177402. doi:10.1103/PhysRevLett.107.177402.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0028-15DB-A

Abstract

We use time- and angle-resolved photoemission spectroscopy with sub-30-fs extreme-ultraviolet pulses to map the time- and momentum-dependent electronic structure of photoexcited 1T−TaS₂. This compound is a two-dimensional Mott insulator with charge-density wave ordering. Charge order, evidenced by splitting between occupied subbands at the Brillouin zone boundary, melts well before the lattice responds. This challenges the view of a charge-density wave caused by electron-phonon coupling and Fermi-surface nesting alone, and suggests that electronic correlations play a key role in driving charge order.