Suppression of Decoherence in Fast-Atom Diffraction at Surfaces

F. Aigner, N. Simonović, B. Solleder, L. Wirtz, and J. Burgdörfer
Phys. Rev. Lett. 101, 253201 – Published 17 December 2008


Scattering of fast neutral atoms with keV kinetic energies at alkali-halide surfaces under grazing angles displays intriguing diffraction patterns. The surprisingly strong persistence of quantum coherence despite the impulsive interaction with an environment at solid state density and elevated temperatures raises fundamental questions such as to the suppression of decoherence and of the quantum-to-classical crossover. We present an ab initio simulation of the quantum diffraction of fast helium beams at a LiF (100) surface in the 110 direction and compare with recent experimental diffraction data. From the quantitative reconstruction of diffraction images the vertical LiF-surface reconstruction, or buckling, can be determined.

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  • Received 30 April 2008


©2008 American Physical Society

Authors & Affiliations

F. Aigner1, N. Simonović1,2, B. Solleder1, L. Wirtz3, and J. Burgdörfer1

  • 1Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna, Austria, EU
  • 2Institute of Physics, P.O. Box 57, 11001 Belgrade, Serbia
  • 3IEMN–Département ISEN, CNRS UMR-8520, Villeneuve d’Ascq, France, EU

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Vol. 101, Iss. 25 — 19 December 2008

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Heating up of Superconductors
January 27, 2017

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