Imaging nonequilibrium atomic vibrations with x-ray diffuse scattering

M. Trigo, J. Chen, V. H. Vishwanath, Y. M. Sheu, T. Graber, R. Henning, and D. A. Reis
Phys. Rev. B 82, 235205 – Published 10 December 2010

Abstract

We use picosecond x-ray diffuse scattering to image the nonequilibrium vibrations in the lattice following ultrafast laser excitation. We present images of nonequilibrium phonons in InP and InSb throughout the Brillouin zone which remain out of equilibrium up to nanoseconds. The results are analyzed using a Born model that helps identify the phonon branches contributing to the observed features in the time-resolved diffuse scattering. In InP this analysis shows a delayed increase in the transverse-acoustic (TA) phonon population along high-symmetry directions accompanied by a decrease in the longitudinal-acoustic phonons. In InSb the increase in TA phonon population is less directional.

  • Figure
  • Figure
  • Figure
  • Received 30 August 2010

DOI:https://doi.org/10.1103/PhysRevB.82.235205

©2010 The American Physical Society

Authors & Affiliations

M. Trigo*, J. Chen, and V. H. Vishwanath

  • PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA

Y. M. Sheu

  • FOCUS Center and Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA

T. Graber and R. Henning

  • The Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, USA

D. A. Reis

  • PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • and Department of Photon Science and Applied Physics, Stanford University, Stanford, California 94305, USA

  • *mtrigo@slac.stanford.edu
  • Present address: Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 82, Iss. 23 — 15 December 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×