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Isotopic Ordering in Adsorbed Hydrogen Single Layers

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Abstract

The isotopic ordering of H2−D2 mixtures adsorbed at low temperature on graphite in the monolayer range is measured by small angle neutron scattering (SANS). We show that below 8 K, solid mixtures exhibit isotopic clustering at large density (monolayer completion) and a tendency towards the formation of ordered compounds for smaller density (near the commensurate structure).

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Author notes

  1. P. Zeppenfeld

    Present address: Institut für Experimentalphysik, J.-Kepler–Universität, A–4040, Linz, Austria

  2. O. E. Vilches

    Present address: Dept. of Physics, Universiry of Washington, Seattle, WA, 98195–1560, USA

  3. I. Mirebeau

    Present address: Laboratoire Léon Brillouin, CEA Saclay, 91191 Gif–sur–Yvette, France. Institut Laue–Langevin, B.P. 156, 38042, Grenoble, France

Authors and Affiliations

  1. CRMC2–CNRS, Case 901, Campus de Luminy, 13288, Marseille, France

    M. Bienfait, J. M. Gay, P. Zeppenfeld, O. E. Vilches, I. Mirebeau & H. J. Lauter

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  1. M. Bienfait
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  2. J. M. Gay
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  3. P. Zeppenfeld
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  4. O. E. Vilches
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  5. I. Mirebeau
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  6. H. J. Lauter
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Bienfait, M., Gay, J.M., Zeppenfeld, P. et al. Isotopic Ordering in Adsorbed Hydrogen Single Layers. Journal of Low Temperature Physics 111, 555–560 (1998). https://doi.org/10.1023/A:1022241331995

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  • DOI: https://doi.org/10.1023/A:1022241331995

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