We report results on the self-assembly of silicon nanoribbons (NRs) on the (2 × 1) reconstructed Au(110) surface under ultra-high vacuum conditions. Upon adsorption of 0.2 monolayer (ML) of silicon, the (2 × 1) reconstruction of Au(110) is replaced by an ordered surface alloy. Above this coverage, a new superstructure is revealed by low energy electron diffraction (LEED), which becomes sharper at 0.3 Si ML. This superstructure corresponds to Si nanoribbons all oriented along the direction as revealed by LEED and scanning tunneling microscopy (STM). STM and high-resolution photoemission spectroscopy indicate that the nanoribbons are flat and predominantly 1.6 nm wide. In addition, the silicon atoms show signatures of two chemical environments corresponding to the edge and center of the ribbons.
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25 February 2013
Research Article|
February 27 2013
Formation of one-dimensional self-assembled silicon nanoribbons on Au(110)-(2 × 1)
Mohamed Rachid Tchalala;
Mohamed Rachid Tchalala
1
Institut des Sciences Moléculaires d'Orsay
, ISMO-CNRS, Bât. 210, Université Paris-Sud, F-91405 Orsay, France
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Hanna Enriquez;
Hanna Enriquez
1
Institut des Sciences Moléculaires d'Orsay
, ISMO-CNRS, Bât. 210, Université Paris-Sud, F-91405 Orsay, France
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Andrew J. Mayne;
Andrew J. Mayne
1
Institut des Sciences Moléculaires d'Orsay
, ISMO-CNRS, Bât. 210, Université Paris-Sud, F-91405 Orsay, France
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Abdelkader Kara;
Abdelkader Kara
2
Department of Physics, University of Central Florida
, Orlando, Florida 32816, USA
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Silvan Roth;
Silvan Roth
3
Physik-Institut der Universität Zürich
, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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Mathieu G. Silly;
Mathieu G. Silly
4
TEMPO Beamline, Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin
, B.P. 48, F-91192 Gif-sur-Yvette Cedex, France
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Azzedine Bendounan;
Azzedine Bendounan
4
TEMPO Beamline, Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin
, B.P. 48, F-91192 Gif-sur-Yvette Cedex, France
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Fausto Sirotti;
Fausto Sirotti
4
TEMPO Beamline, Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin
, B.P. 48, F-91192 Gif-sur-Yvette Cedex, France
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Thomas Greber;
Thomas Greber
3
Physik-Institut der Universität Zürich
, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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Bernard Aufray;
Bernard Aufray
5
CINaM, CNRS, Aix-Marseille Université
, Campus de Luminy, Case 913, 13288, Marseille Cedex 9, France
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Gérald Dujardin;
Gérald Dujardin
1
Institut des Sciences Moléculaires d'Orsay
, ISMO-CNRS, Bât. 210, Université Paris-Sud, F-91405 Orsay, France
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Mustapha Ait Ali;
Mustapha Ait Ali
6
Laboratoire de Chimie de Coordination et Catalyse, Département de Chimie, Faculté des Sciences-Semlalia, Université Cadi Ayyad
, Marrakech 40001, Morocco
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Hamid Oughaddou
Hamid Oughaddou
a)
1
Institut des Sciences Moléculaires d'Orsay
, ISMO-CNRS, Bât. 210, Université Paris-Sud, F-91405 Orsay, France
7
Département de Physique, Université de Cergy-Pontoise
, F-95031 Cergy-Pontoise Cedex, France
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
Appl. Phys. Lett. 102, 083107 (2013)
Article history
Received:
October 20 2012
Accepted:
February 12 2013
Citation
Mohamed Rachid Tchalala, Hanna Enriquez, Andrew J. Mayne, Abdelkader Kara, Silvan Roth, Mathieu G. Silly, Azzedine Bendounan, Fausto Sirotti, Thomas Greber, Bernard Aufray, Gérald Dujardin, Mustapha Ait Ali, Hamid Oughaddou; Formation of one-dimensional self-assembled silicon nanoribbons on Au(110)-(2 × 1). Appl. Phys. Lett. 25 February 2013; 102 (8): 083107. https://doi.org/10.1063/1.4793536
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