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Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS2

Hellmann, S. ; Beye, M. ; Sohrt, C. ; Rohwer, T. ; Sorgenfrei, F. ; Redlin, H. ; Kallaene, M. ; Marczynski-Buehlow, M. ; Hennies, Franz LU and Bauer, M. , et al. (2010) In Physical Review Letters 105(18).
Abstract
Femtosecond time-resolved core-level photoemission spectroscopy with a free-electron laser is used to measure the atomic-site specific charge-order dynamics of the charge-density wave in the Mott insulator 1T-TaS2. After strong photoexcitation, a prompt loss of charge order and subsequent fast equilibration dynamics of the electron-lattice system are observed. On the time scale of electron-phonon thermalization, about 1 ps, the system is driven across a phase transition from a long-range charge ordered state to a quasiequilibrium state with domainlike short-range charge and lattice order. The experiment opens the way to study the nonequilibrium dynamics of condensed matter systems with full elemental, chemical, and atomic-site selectivity.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
105
issue
18
article number
187401
publisher
American Physical Society
external identifiers
  • wos:000283542500017
  • scopus:78049254428
  • pmid:21231136
ISSN
1079-7114
DOI
10.1103/PhysRevLett.105.187401
language
English
LU publication?
yes
id
4e13e8f2-e1e4-4ba7-b60a-644698d8d189 (old id 1720257)
date added to LUP
2016-04-01 10:14:32
date last changed
2022-04-12 03:24:21
@article{4e13e8f2-e1e4-4ba7-b60a-644698d8d189,
  abstract     = {{Femtosecond time-resolved core-level photoemission spectroscopy with a free-electron laser is used to measure the atomic-site specific charge-order dynamics of the charge-density wave in the Mott insulator 1T-TaS2. After strong photoexcitation, a prompt loss of charge order and subsequent fast equilibration dynamics of the electron-lattice system are observed. On the time scale of electron-phonon thermalization, about 1 ps, the system is driven across a phase transition from a long-range charge ordered state to a quasiequilibrium state with domainlike short-range charge and lattice order. The experiment opens the way to study the nonequilibrium dynamics of condensed matter systems with full elemental, chemical, and atomic-site selectivity.}},
  author       = {{Hellmann, S. and Beye, M. and Sohrt, C. and Rohwer, T. and Sorgenfrei, F. and Redlin, H. and Kallaene, M. and Marczynski-Buehlow, M. and Hennies, Franz and Bauer, M. and Foehlisch, A. and Kipp, L. and Wurth, W. and Rossnagel, K.}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  number       = {{18}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS2}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.105.187401}},
  doi          = {{10.1103/PhysRevLett.105.187401}},
  volume       = {{105}},
  year         = {{2010}},
}