JCP Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

You Tube Flickr Twitter UniPHY Group iResearch App Facebook

Journal of Chemical Physics / Volume 135 / Issue 21 / ARTICLES / Advanced Experimental Techniques

J. Chem. Phys. 135, 214201 (2011); http://dx.doi.org/10.1063/1.3663963 (15 pages)

Structural dynamics of surfaces by ultrafast electron crystallography: Experimental and multiple scattering theory

Sascha Schäfer, Wenxi Liang, and Ahmed H. Zewail

Physical Biology Center for Ultrafast Science and Technology, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, USA

View MapView Map

(Received 1 September 2011; accepted 2 November 2011; published online 2 December 2011)

Recent studies in ultrafast electron crystallography (UEC) using a reflection diffraction geometry have enabled the investigation of a wide range of phenomena on the femtosecond and picosecond time scales. In all these studies, the analysis of the diffraction patterns and their temporal change after excitation was performed within the kinematical scattering theory. In this contribution, we address the question, to what extent dynamical scattering effects have to be included in order to obtain quantitative information about structural dynamics. We discuss different scattering regimes and provide diffraction maps that describe all essential features of scatterings and observables. The effects are quantified by dynamical scattering simulations and examined by direct comparison to the results of ultrafast electron diffraction experiments on an in situ prepared Ni(100) surface, for which structural dynamics can be well described by a two-temperature model. We also report calculations for graphite surfaces. The theoretical framework provided here allows for further UEC studies of surfaces especially at larger penetration depths and for those of heavy-atom materials.

© 2011 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL METHODS
  3. THEORETICAL METHODS
    1. Dynamical diffraction theory
    2. The two-temperature model and structural dynamics of Ni(100)
  4. RESULTS AND DISCUSSION
    1. Qualitative features in dynamical scattering from static crystal surfaces
    2. Temporal changes of the scattering intensity
    3. Connection between the diffraction map and the diffraction pattern
    4. Dynamical scattering in nickel and graphite
      1. Dynamics of a clean Ni(100) surface
      2. Dynamics of single crystalline graphite
  5. CONCLUSION

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

crystallography, graphite, nickel, reflection high energy electron diffraction, surface structure

PACS

  • 68.35.B-

    Structure of clean surfaces (and surface reconstruction)

  • 68.35.bp

    Fullerenes

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3663963

PUBLICATION DATA

ISSN

0021-9606 (print)  
1089-7690 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    S. Williamson, G. Mourou, and J. C. M. Li, Phys. Rev. Lett. 52, 2364 (1984).

    S. Nie, X. Wang, H. Park, R. Clinite, and J. Cao, Phys. Rev. Lett. 96, 025901 (2006).

    P. Musumeci, J. T. Moody, C. M. Scoby, M. S. Gutierrez, M. Westfall, and R. K. Li, J. Appl. Phys. 108, 114513 (2010)JAPIAU000108000011114513000001.

    G. Mourou and S. Williamson, Appl. Phys. Lett. 41, 44 (1982)APPLAB000041000001000044000001.

    H. Park and J. M. Zuo, Appl. Phys. Lett. 94, 251103 (2009)APPLAB000094000025251103000001.

    U. Korte and G. Meyer-Ehmsen, Phys. Rev. B 48, 8345 (1993).

    Z. Lin, L. V. Zhigilei, and V. Celli, Phys. Rev. B 77, 075133 (2008).

    J. Li, R. Clinite, X. Wang, and J. Cao, Phys. Rev. B 80, 014304 (2009).

    X. Wang, S. Nie, J. Li, R. Clinite, M. Wartenbe, M. Martin, W. Liang, and J. Cao, Appl. Phys. Lett. 92, 121918 (2008)APPLAB000092000012121918000001.

    L. Verlet, Phys. Rev. 159, 98 (1967).

    F. Carbone, P. Baum, P. Rudolf, and A. H. Zewail, Phys. Rev. Lett. 100, 035501 (2008).

    T. Nihira and T. Iwata, Phys. Rev. B 68, 134305 (2003).


Figures (16)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)


Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Structural dynamics of surfaces by ultrafast electron crystallography: Experimental and multiple scattering theory
  2. Multiple state transition interface sampling of alanine dipeptide in explicit solvent
  3. Charge transfer dynamics of model charge transfer centers of a multicenter water splitting dye complex on rutile TiO2(110)
  4. Ab initio calculations of optical absorption spectra: Solution of the Bethe–Salpeter equation within density matrix perturbation theory
  5. Accelerating self-consistent field convergence with the augmented Roothaan–Hall energy function
Go to AIP Home
Copyright © American Institute of Physics
close