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ANGLE-SCANNED PHOTOEMISSION ONYbHx: RELEVANCE FOR SWITCHABLE MIRRORS

Author

Listed:
  • J. HAYOZ

    (Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland)

  • C. KOITZSCH

    (Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland)

  • D. POPOVIĆ

    (Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland)

  • M. BOVET

    (Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland)

  • D. NAUMOVIĆ

    (Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland)

  • P. AEBI

    (Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland)

Abstract

Yttrium, lantanum and rare earth elements can be loaded with hydrogen inducing a metal–insulator transition and giving rise to optical switching from reflecting to transparent. We present angle-scanned photoemission experiments characterizing thinYbHxfilms grown on W(110) at room temperature. Hydrogen loading is performed in an ultrahigh-vacuum-compatible high pressure (1 bar) reaction cell. Via full-hemispherical X-ray photoelectron diffraction and low energy electron diffraction, it is demonstrated that these films grow well-ordered and single-crystalline. Ultraviolet photoemission reveals a gap for the dihydride phase confirming a transition from reflecting to transparent as seen by visual inspection. Ion implantation through additional H+ sputtering allows one to increase the hydrogen content tox ≈ 2.4.

Suggested Citation

  • J. Hayoz & C. Koitzsch & D. Popović & M. Bovet & D. Naumović & P. Aebi, 2002. "ANGLE-SCANNED PHOTOEMISSION ONYbHx: RELEVANCE FOR SWITCHABLE MIRRORS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(01), pages 235-241.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:01:n:s0218625x02001719
    DOI: 10.1142/S0218625X02001719
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