Meny

Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

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

Författare:
  • S. Hellmann
  • M. Beye
  • C. Sohrt
  • T. Rohwer
  • F. Sorgenfrei
  • H. Redlin
  • M. Kallaene
  • M. Marczynski-Buehlow
  • Franz Hennies (Dr.)
  • M. Bauer
  • A. Foehlisch
  • L. Kipp
  • W. Wurth
  • K. Rossnagel
Publiceringsår: 2010
Språk: Engelska
Sidor:
Publikation/Tidskrift/Serie: Physical Review Letters
Volym: 105
Nummer: 18
Dokumenttyp: Artikel
Förlag: American Physical Society

Sammanfattning

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.

Disputation

Nyckelord

  • Physics and Astronomy

Övriga

Published
Yes
  • ISSN: 0031-9007

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen