ANGLE-SCANNED PHOTOEMISSION ON YbHx: RELEVANCE FOR SWITCHABLE MIRRORS
- HAYOZ, J. Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland
- KOITZSCH, C. Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland
- POPOVIĆ, D. Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland
- BOVET, M. Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland
- NAUMOVIĆ, D. Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland
- AEBI, P. Institut de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland
- 2012-1-25
Published in:
- Surface Review and Letters. - World Scientific Pub Co Pte Lt. - 2002, vol. 09, no. 01, p. 235-241
English
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 thin YbH x films 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 to x ≈ 2.4.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1142/s0218625x02001719
- ISSN 0218-625X
- Persistent URL
- https://sonar.ch/global/documents/159301
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