sp2-like hybridization of silicon valence orbitals in silicene nanoribbons

被引：122

作者：

De Padova, Paola ^{[1
]}

Quaresima, Claudio ^{[1
]}

Olivieri, Bruno ^{[2
]}

Perfetti, Paolo ^{[1
]}

Le Lay, Guy ^{[3
]}

机构：

[1] Consiglio Nazl Ric ISM, I-00133 Rome, Italy

[2] Consiglio Nazl Ric ISAC, I-00133 Rome, Italy

[3] CINaM CNRS, F-13288 Marseille 9, France

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 08期

关键词：

ENERGY-LOSS SPECTRA; CARBON K-EDGE; ORIENTATION DEPENDENCE; GRAPHITE;

D O I：

10.1063/1.3557073

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Silicene nanoribbons grown on a silver (110) substrate have been studied by reflection electron energy loss spectroscopy as a function of the electron beam incidence angle alpha. The spectra, taken at the Si K absorption edge (1.840 keV), reveal the presence of two distinct loss structures attributed to transitions 1s ->pi* and 1s ->sigma*, according to their intensity dependence on alpha. Such behavior, when compared to graphite, attests the sp(2)-like hybridization of the silicon valence orbitals in the silicene nanoribbons as is, indeed, for carbon atomic bonds of graphene. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3557073]

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页数：3

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共 17 条

[1] Graphene-like silicon nanoribbons on Ag(110): A possible formation of silicene [J].

Aufray, Bernard ;

Kara, Abdelkader ;

Vizzini, Sebastien ;

Oughaddou, Hamid ;

Leandri, Christel ;

Ealet, Benedicte ;

Le Lay, Guy .

APPLIED PHYSICS LETTERS, 2010, 96 (18)

[2] Two- and One-Dimensional Honeycomb Structures of Silicon and Germanium [J].

Cahangirov, S. ;

Topsakal, M. ;

Akturk, E. ;

Sahin, H. ;

Ciraci, S. .

PHYSICAL REVIEW LETTERS, 2009, 102 (23)

[3] ORIENTATION DEPENDENCE OF THE CARBON K-EDGE IN GRAPHITE MEASURED BY REFLECTION ELECTRON-ENERGY-LOSS SPECTROSCOPY [J].

CHEUNG, TTP .

PHYSICAL REVIEW B, 1985, 31 (08) :4792-4797

[4] Growth of straight, atomically perfect, highly metallic silicon nanowires with chiral asymmetry [J].

De Padova, Paola ;

Quaresima, Claudio ;

Perfetti, Paolo ;

Olivieri, Bruno ;

Leandri, Christel ;

Aufray, Bernard ;

Vizzini, Sebastien ;

Le Lay, Guy .

NANO LETTERS, 2008, 8 (01) :271-275

[5] Evidence of graphene-like electronic signature in silicene nanoribbons [J].

De Padova, Paola ;

Quaresima, Claudio ;

Ottaviani, Carlo ;

Sheverdyaeva, Polina M. ;

Moras, Paolo ;

Carbone, Carlo ;

Topwal, Dinesh ;

Olivieri, Bruno ;

Kara, Abdelkader ;

Oughaddou, Hamid ;

Aufray, Bernard ;

Le Lay, Guy .

APPLIED PHYSICS LETTERS, 2010, 96 (26)

[6] Inelastic processes versus diffraction effects: Polar-angle energy-loss spectra of the graphite K edge [J].

Gunnella, R ;

Davoli, I ;

Bernardini, R ;

DeCrescenzi, M .

PHYSICAL REVIEW B, 1995, 52 (24) :17091-17098

[7] Electronic structure of silicon-based nanostructures [J].

Guzman-Verri, Gian G. ;

Voon, L. C. Lew Yan .

PHYSICAL REVIEW B, 2007, 76 (07)

[8] ELNES study of carbon K-edge spectra of plasma deposited carbon films [J].

Hamon, AL ;

Verbeeck, J ;

Schryvers, D ;

Benedikt, J ;

Van der Sanden, RMCM .

JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (13) :2030-2035

[9] Physics of Silicene Stripes [J].

Kara, A. ;

Leandri, C. ;

Davila, M. E. ;

Padova, P. De ;

Ealet, B. ;

Oughaddou, H. ;

Aufray, B. ;

Lay, G. Le .

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2009, 22 (03) :259-263

[10] Silicon nano-ribbons on Ag(110): a computational investigation [J].

Kara, Abdelkader ;

Vizzini, Sebastien ;

Leandri, Cristel ;

Ealet, Benedicte ;

Oughaddou, Hamid ;

Aufray, Bernard ;

Lelay, Guy .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2010, 22 (04)