Electronic and atomic structures of a Sn induced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:mn>3</mml:mn><mml:msqrt><mml:mn>3</mml:mn></mml:msqrt><mml:mo>×</mml:mo><mml:mn>3</mml:mn><mml:msqrt><mml:mn>3</mml:mn></mml:msqrt></mml:math> superstructure on the Ag/Ge(111) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msqrt><mml:mn>3</mml:mn></mml:msqrt><mml:mo>×</mml:mo><mml:msqrt><mml:mn>3</mml:mn></mml:msq

Sohail, Hafiz Muhammad; Uhrberg, R. I. G.

doi:10.1016/j.susc.2015.08.037

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…Наиболее широко проводились исследования на кремнии и германии однокомпонентных структур таких металлов как Ag, Pb, Sn, Au, In, Tl [1][2][3][4][5][6]. Использование второго элемента может приводить к двухкомпонентным структурам (Ag, Au) [7], (In, Au) [8], (In, Pb) [9,10], (Sn, Ag) [11,12]. Второй элемент в некоторых случаях, может использоваться в качестве сурфактанта.…”

Section: Introductionunclassified

Диффузия Ag и Pb по поверхности Ge(111)-3x2sqrt(3)sqrtSn

Долбак¹

2023

Физика Твердого Тела

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Ag and Pb diffusion on Ge(111)-3x2sqrt(3)-Sn surface has been studied by Auger electron spectroscopy and low energy electron. The mechanisms of diffusion of atoms of these elements along the Ge(111)-3x2sqrt(3)-Sn surface are determined, and the temperature dependences of the diffusion coefficients are measured. Surface diﬀusion coeﬃcients versus temperature have been measured. The diffusion parameters of Ag along the Ge(111)-3x2sqrt(3)-Sn and Si (111)-2sqrt(3)x2sqrt(3)-Sn surfaces are compared.

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Section: Introductionunclassified

Диффузия Ag и Pb по поверхности Ge(111)-3x2sqrt(3)sqrtSn

Долбак¹

2023

Физика Твердого Тела

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“…It is worth noting also a modern trend of using more than a single atomic species when fabricating metal-induced reconstructions on semiconductor surfaces [32][33][34][35][36][37][38][39][40][41][42][43]. The two-dimensional compounds represent a novel class of materials which can possess advanced properties unavailable in the mono-species systems.…”

Section: Introductionmentioning

confidence: 99%

2D Tl–Pb compounds on Ge(1 1 1) surface: atomic arrangement and electronic band structure

Грузнев

Bondarenko

Tupchaya

et al. 2016

J. Phys.: Condens. Matter

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Structural transformations and evolution of the electron band structure in the (Tl, Pb)/Ge(1 1 1) system have been studied using low-energy electron diffraction, scanning tunneling microscopy, angle-resolved photoelectron spectroscopy and density functional theory calculations. The two 2D Tl-Pb compounds on Ge(1 1 1), [Formula: see text]-(Tl, Pb) and [Formula: see text]-(Tl, Pb), have been found and their composition, atomic arrangement and electron properties has been characterized. The (Tl, Pb)/Ge(1 1 1)[Formula: see text] compound is almost identical to the alike (Tl, Pb)/Si(1 1 1)[Formula: see text] system from the viewpoint of its atomic structure and electronic properties. They contain 1.0 ML of Tl atoms arranged into a honeycomb network of chained trimers and 1/3 ML of Pb atoms occupying the centers of the honeycomb units. The (Tl, Pb)/Ge(1 1 1)[Formula: see text] compound contains six Tl atoms and seven Pb atoms per [Formula: see text] unit cell (i.e. ∼0.67 ML Tl and ∼0.78 ML Pb). Its atomic structure can be visualized as consisting of Pb hexagons surrounded by Tl trimers. The (Tl, Pb)/Ge(1 1 1)[Formula: see text] and (Tl, Pb)/Ge(1 1 1)[Formula: see text] compounds are metallic and their band structures contain spin-split surface-state bands. By analogy with the (Tl, Pb)/Si(1 1 1)[Formula: see text], these (Tl, Pb)/Ge(1 1 1) compounds are believed to be promising objects for prospective studies of superconductivity in one-atom-layer systems.

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Experimental studies of an In/Pb binary surface alloy on Ge(111)

Sohail

Uhrberg

2016

Surface Science

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In this study, we present a binary In/Pb surface alloy on Ge(111) formed by evaporating In on the Pb/Ge(111) 3 3 × β phase. A well-defined 3×3 periodicity is formed after annealing, as verified by both low energy electron diffraction (LEED) and scanning tunneling microscopy (STM). Overview STM images show a clear 3×3 periodicity. Detailed STM images reveal protrusions corresponding to atomic sized features with a local hexagonal arrangement. Each 3×3 unit cell contains nine such features indicating a structure with 9 atoms per 3×3 cell in the topmost layer. Based on angle resolved photoelectron spectroscopy (ARPES) data, we have identified five surface bands within the bulk band gap. Four of them cross the Fermi level leading to a metallic character of the surface. The dispersions of these bands have been mapped in detail along two high symmetry directions of the surface Brillouin zone. Constant energy contours, mapped in two dimensional k-space, show interesting features. In particular, the occurrence of two differently rotated hexagon like contours is presented.

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Electronic and atomic structures of a Sn induced 33×33 superstructure on the Ag/Ge(111) 3×3

Cited by 5 publications

References 18 publications

Диффузия Ag и Pb по поверхности Ge(111)-3x2sqrt(3)sqrtSn

Диффузия Ag и Pb по поверхности Ge(111)-3x2sqrt(3)sqrtSn

2D Tl–Pb compounds on Ge(1 1 1) surface: atomic arrangement and electronic band structure

Experimental studies of an In/Pb binary surface alloy on Ge(111)

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