High-Frequency Subsurface and Bulk Dynamics of Liquid Indium

H. Reichert, F. Bencivenga, B. Wehinger, M. Krisch, F. Sette, and H. Dosch
Phys. Rev. Lett. 98, 096104 – Published 28 February 2007

Abstract

We have performed bulk and surface-sensitive inelastic x-ray scattering experiments on liquid indium with 3 meV energy resolution. The experimental data are well reproduced within a generalized hydrodynamic model including structural and microscopic relaxation processes. We find a longitudinal viscosity of 22 mPa s in the near-surface region compared to 7.4 mPa s in the bulk. The origin of the increase is associated with a slowing down of the collective dynamics in a subsurface region of 4.6 nm.

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  • Received 8 September 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.096104

©2007 American Physical Society

Authors & Affiliations

H. Reichert1, F. Bencivenga2, B. Wehinger1, M. Krisch2, F. Sette2, and H. Dosch1

  • 1Max Planck Institut für Metallforschung, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
  • 2European Synchrotron Radiation Facility, Boîte Postale 220, F-38043 Grenoble Cedex, France

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Issue

Vol. 98, Iss. 9 — 2 March 2007

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