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Atomic-scale visualization of inertial dynamics

Författare:
  • AM Lindenberg
  • Jörgen Larsson
  • K Sokolowski-Tinten
  • KJ Gaffney
  • C Blome
  • Ola Synnergren
  • J Sheppard
  • C Caleman
  • AG MacPhee
  • D Weinstein
  • DP Lowney
  • TK Allison
  • T Matthews
  • RW Falcone
  • AL Cavalieri
  • DM Fritz
  • SH Lee
  • PH Bucksbaum
  • DA Reis
  • J Rudati
  • PH Fuoss
  • CC Kao
  • DP Siddons
  • R Pahl
  • J Als-Nielsen
  • S Duesterer
  • R Ischebeck
  • H Schlarb
  • H Schulte-Schrepping
  • T Tschentscher
  • J Schneider
  • D von der Linde
  • O Hignette
  • F Sette
  • HN Chapman
  • RW Lee
  • T N Hansen
  • S Techert
  • JS Wark
  • M Bergh
  • G Huldt
  • D van der Spoel
  • N Timneanu
  • J Hajdu
  • RA Akre
  • E Bong
  • P Krejcik
  • J Arthur
  • S Brennan
  • K Luening
  • JB Hastings
Publiceringsår: 2005
Språk: Engelska
Sidor: 392-395
Publikation/Tidskrift/Serie: Science
Volym: 308
Nummer: 5720
Dokumenttyp: Artikel
Förlag: American Association for the Advancement of Science

Sammanfattning

The motion of atoms on interatomic potential energy surfaces is fundamental to the dynamics of liquids and solids. An accelerator-based source of femtosecond x-ray pulses allowed us to follow directly atomic displacements on an optically modified energy landscape, leading eventually to the transition from crystalline solid to disordered liquid. We show that, to first order in time, the dynamics are inertial, and we place constraints on the shape and curvature of the transition-state potential energy surface. Our measurements point toward analogies between this nonequilibrium phase transition and the short-time dynamics intrinsic to equilibrium liquids.

Disputation

Nyckelord

  • Physics and Astronomy

Övrigt

Published
Yes
  • ISSN: 0036-8075

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