TY  - SER
AU  - Hsing,Cheng-Rong
AU  - Wei,Ching-Ming
AU  - Eremeev,Sergey V.
AU  - Bondarenko,Leonid V.
AU  - Tupchaya,Alexandra Yu
AU  - Gruznev,Dimitry V.
AU  - Zotov,Andrey V.
AU  - Saranin,Alexander A.
AU  - Mihalyuk,Alexey N.
TI  - (Tl, Au)/Si(1 1 1)√7×√7 2D compound: an ordered array of identical Au clusters embedded in Tl matrix
KW  - кремний
KW  - золото
KW  - таллий
KW  - взаимодействие атомных частиц с твердым телом
KW  - сканирующая туннельная микроскопия
KW  - фотоэлектронная спектроскопия с угловым разрешением
KW  - метод функционала плотности
KW  - статьи в журналах
N1  - Библиогр.: 28 назв
N2  - Formation of the highly-ordered √7×√7-periodicity 2D compound has been detected in the (Tl, Au)/Si(111) system as a result of Au deposition onto the Tl/Si(111) surface and its composition, structure and electronic properties have been characterized using scanning tunneling microscopy and angle-resolved photoelectron spectroscopy observations and density-functional-theory calculations. On the basis of these data, the structural model of the Tl-Au compound has been proposed, which adopts 12 Tl atoms and 10 Au atoms (in total, 22 atoms) per √7×√7 unit cell, i.e. ∼1.71 ML of Tl and ∼1.43 ML of Au (in total, ∼3.14 ML). Qualitatively, the model can be visualized as consisting of truncated-pyramid-like Au clusters with a Tl atom on top, while the other Tl atoms form a double layer around the Au clusters. The (Tl, Au)/Si(111)√7×√7 compound has been found to exhibit pronounced metallic properties at least down to temperatures as low as ∼25 K, which makes it a promising object for studying electrical transport phenomena in the 2D metallic systems
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000789469
ER  -