Study of Sodium Adsorption on Pb/Si(111) Surfaces

The new reconstructions formed by sodium adsorption on Pb-terminated Si (111) surface were obtained: 2x2+2sqrt3x2sqrt3, 4x1, 3x3 and others. These surface structures have been observed by low-energy electron diffraction (LEED) and phase diagram for 2D binary (Na,Pb)/Si (111) system has been obtained...

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Veröffentlicht in:	Diffusion and defect data. Solid state data. Pt. A, Defect and diffusion forum Defect and diffusion forum, 2018-09, Vol.386, p.55-60
Hauptverfasser:	Ivanchenko, Maxim Viktorovich, Borisenko, Elena Anatolyevna, Tsukanov, Dmitry Anatolyevich, Ryzhkova, Maria Valeryevna
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorption Binary systems Low energy electron diffraction Phase diagrams Silicon substrates Sodium Surface chemistry Two dimensional materials
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Zusammenfassung:	The new reconstructions formed by sodium adsorption on Pb-terminated Si (111) surface were obtained: 2x2+2sqrt3x2sqrt3, 4x1, 3x3 and others. These surface structures have been observed by low-energy electron diffraction (LEED) and phase diagram for 2D binary (Na,Pb)/Si (111) system has been obtained. The (Na,Pb)/Si (111) system is considered as a two-dimensional alloy layer with highly ordered structure. Influence of two-dimensional alloys on surface conductivity of Si (111) substrate has been studied in situ by four-point-probe method.
ISSN:	1012-0386 1662-9507 1662-9507
DOI:	10.4028/www.scientific.net/DDF.386.55