1
|
Prévot G, Hogan C, Leoni T, Bernard R, Moyen E, Masson L. Si Nanoribbons on Ag(110) Studied by Grazing-Incidence X-Ray Diffraction, Scanning Tunneling Microscopy, and Density-Functional Theory: Evidence of a Pentamer Chain Structure. PHYSICAL REVIEW LETTERS 2016; 117:276102. [PMID: 28084766 DOI: 10.1103/physrevlett.117.276102] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Indexed: 05/22/2023]
Abstract
We report a combined grazing incidence x-ray diffraction (GIXD), scanning tunneling microscopy (STM), and density-functional theory (DFT) study which clearly elucidates the atomic structure of the Si nanoribbons grown on the missing-row reconstructed Ag(110) surface. Our study allows us to discriminate between the theoretical models published in the literature, including the most stable atomic configurations and those based on a missing-row reconstructed Ag(110) surface. GIXD measurements unambiguously validate the pentamer model grown on the reconstructed surface, obtained from DFT. This pentamer atomistic model accurately matches the high-resolution STM images of the Si nanoribbons adsorbed on Ag(110). Our study closes the long-debated atomic structure of the Si nanoribbons grown on Ag(110) and definitively excludes a honeycomb structure similar to that of freestanding silicene.
Collapse
Affiliation(s)
- Geoffroy Prévot
- Sorbonne Universités, UPMC Université Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris, F-75005 Paris, France
| | - Conor Hogan
- CNR-Istituto di Struttura della Materia, Via Fosso del Cavaliere 100, 00133 Rome, Italy and Dipartimento di Fisica, Università di Rome "Tor Vergata," Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Thomas Leoni
- Aix Marseille Univ, CNRS, CINaM, Campus de Luminy, Case 913, 13288 Marseille Cedex 9, France
| | - Romain Bernard
- Sorbonne Universités, UPMC Université Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris, F-75005 Paris, France
| | - Eric Moyen
- Aix Marseille Univ, CNRS, CINaM, Campus de Luminy, Case 913, 13288 Marseille Cedex 9, France
| | - Laurence Masson
- Aix Marseille Univ, CNRS, CINaM, Campus de Luminy, Case 913, 13288 Marseille Cedex 9, France
| |
Collapse
|