Single-domain epitaxial silicene on diboride thin films

Journal Article · Mon Apr 11 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4945370· OSTI ID:22591556

Friedlein, R.; Aoyagi, K.; Yamada-Takamura, Y. ^[1]; Gill, T. G. ^[1]; Sadowski, J. T. ^[2]; Copel, M.; Tromp, R. M. ^[3]; Hirjibehedin, C. F. ^[4]

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1. School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292 (Japan)
2. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973 (United States)
3. IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, New York 10598 (United States)
4. London Centre for Nanotechnology, University College London (UCL), London WC1H 0AH (United Kingdom)

Epitaxial silicene, which forms spontaneously on ZrB{sub 2}(0001) thin films grown on Si(111) wafers, has a periodic stripe domain structure. By adsorbing additional Si atoms on this surface, we find that the domain boundaries vanish, and a single-domain silicene sheet can be prepared without altering its buckled honeycomb structure. The amount of Si required to induce this change suggests that the domain boundaries are made of a local distortion of the silicene honeycomb lattice. The realization of a single domain sheet with structural and electronic properties close to those of the original striped state demonstrates the high structural flexibility of silicene.

• OSTI ID: 22591556
• Journal Information: Applied Physics Letters, Vol. 108, Issue 15; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
DOMAIN STRUCTURE
EPITAXY
FLEXIBILITY
HONEYCOMB STRUCTURES
PERIODICITY
SHEETS
SILICENE
SURFACES
THIN FILMS
ZIRCONIUM BORIDES