<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Si</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mn>111</mml:mn><mml:mo>)</mml:mo></mml:mrow><mml:mtext>−</mml:mtext><mml:mi>α</mml:mi><mml:mtext>−</mml:mtext><mml:msqrt><mml:mn>3</mml:mn></mml:msqrt><mml:mo>×</mml:mo><mml:msqrt><mml:mn>3</mml:mn></mml:msqrt><mml:mtext>−</mml:mtext><mml:mi mathvariant="normal">Au</mml:mi></mml:mrow></mml:math>phase modified by In adsorption: Stabilization of a homoge

Грузнев, Д. В.; Filippov, I. N.; Olyanich, D.A.; Chubenko, D. N.; Kuyanov, I. A.; Саранин, А. А.; Зотов, А. В.; Lifshits, V.G.

doi:10.1103/physrevb.73.115335

Cited by 46 publications

(30 citation statements)

References 30 publications

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“…DFT calculations for In-adsorbed surface26 showed that removal of domain walls is due to a stress-relieving effect produced by In adsorption. However, origin of this effect was not disclosed.…”

Section: Discussionmentioning

confidence: 99%

“…However, the structural and electronic properties of surface are actually poor due to a presence of random domain walls. Fortunately, the breakthrough way was found to improve the surface, namely, adding small amount of In eliminates completely domain walls26 and enhances metallic surface band filling27. It has been recognized that after the transformation the basic CHCT structure of the original surface is preserved, while the indium adsorbate forms a 2D gas of adatoms on it212627.…”

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confidence: 99%

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Large spin splitting of metallic surface-state bands at adsorbate-modified gold/silicon surfaces

Bondarenko

Грузнев

Yakovlev

et al. 2013

Sci Rep

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Finding appropriate systems with a large spin splitting of metallic surface-state band which can be fabricated on silicon using routine technique is an essential step in combining Rashba-effect based spintronics with silicon technology. We have found that originally poor structural and electronic properties of the surface can be substantially improved by adsorbing small amounts of suitable species (e.g., Tl, In, Na, Cs). The resultant surfaces exhibit a highly-ordered atomic structure and spin-split metallic surface-state band with a momentum splitting of up to 0.052 Å−1 and an energy splitting of up to 190 meV at the Fermi level. The family of adsorbate-modified surfaces, on the one hand, is thought to be a fascinating playground for exploring spin-splitting effects in the metal monolayers on a semiconductor and, on the other hand, expands greatly the list of material systems prospective for spintronics applications.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Large spin splitting of metallic surface-state bands at adsorbate-modified gold/silicon surfaces

Bondarenko

Грузнев

Yakovlev

et al. 2013

Sci Rep

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“…According to STM images 8 and angle-resolved photoelectron spectroscopy measurments 9 taken at RT, B0.15 ML of In mobile adatoms on the Si(111) O3 Â O3-(Au, In) surface results in the formation of 2D electron gas, which is distributed as honeycomb network excluding the sites on top of the Au trimers. Because the distributions of free electron gas exclude Au-trimer sites, we would expect less charge transfer from surfaces to the C 60 s on Au-trimer sites, as supported by our STS observations ( Supplementary Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, C 60 has the ability to accept electrons from other molecules, atoms and surfaces 2 , therefore an ensemble of monodispersed C 60 clusters has the potential to exhibit interesting electronic properties, which could be the foundation for its applications in nanodevices. On the other hand, the Au-In-covered Si(111) surface is a highly homogeneous surface at room temperature (RT) 8,9 . In previous studies, when an overlayer of C 60 molecules adsorb on such homogenous Si(111)O3 Â O3-(Au,In) surface, two phase of hexagonal close-packed C 60 lattice with different lattice orientations have been observed 10 .…”

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Stepwise self-assembly of C60 mediated by atomic scale moiré magnifiers

et al. 2013

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Self-assembly of atoms or molecules on a crystal surface is considered one of the most promising methods to create molecular devices. Here we report a stepwise self-assembly of C 60 molecules into islands with unusual shapes and preferred sizes on a goldindium-covered Si(111) surface. Specifically, 19-mer islands prefer a non-compact boomerang shape, whereas hexagonal 37-mer islands exhibit extraordinarily enhanced stability and abundance. The stepwise self-assembly is mediated by the moiré interference between an island with its underlying lattice, which essentially maps out the adsorption-energy landscape of a C 60 on different positions of the surface with a lateral magnification factor and dictates the probability for the subsequent attachment of C 60 to an island's periphery. Our discovery suggests a new method for exploiting the moiré interference to dynamically assist the self-assembly of particles and provides an unexplored tactic of engineering atomic scale moiré magnifiers to facilitate the growth of monodispersed mesoscopic structures.

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“…The Au/Si(111)-3 3surface has been studied extensively. There are two well established models for it: twist trimer (TT) model and conjugate honeycomb-chained-trimer (CHCT) model [37], as shown in figures 2(a) and (b), respectively. According to Lee's calculation [37], TT model is slightly more stable by 0.01 eV than that of CHCT model and there is an energy barrier of 0.05 eV between these two models, making it unsuitable for practical applications.…”

Section: Dft Calculationmentioning

confidence: 99%

Surface alloy engineering in 2D trigonal lattice: giant Rashba spin splitting and two large topological gaps

et al. 2018

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We demonstrate that sp 2 based trigonal lattice can exhibit giant Rashba splitting and two large topological gaps simultaneously. First, an effective tight binding model is developed to describe the Rashba spin-orbit coupling (SOC) on a real surface and give a topological phase diagram based on two independent SOC parameters. Second, based on density functional theory calculations, it is proposed that Au/Si(111)-3 3surface with 1/3 monolayer Bi coverage is a good material candidate to realize both giant Rashba splitting and two large topological gaps. These results would inspire great research interests for searching two-dimensional topological insulator and manipulating Rashba spin splitting through surface alloy engineering.

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Si(111)−α−3×3−Auphase modified by In adsorption: Stabilization of a homoge

Cited by 46 publications

References 30 publications

Large spin splitting of metallic surface-state bands at adsorbate-modified gold/silicon surfaces

Large spin splitting of metallic surface-state bands at adsorbate-modified gold/silicon surfaces

Stepwise self-assembly of C60 mediated by atomic scale moiré magnifiers

Surface alloy engineering in 2D trigonal lattice: giant Rashba spin splitting and two large topological gaps

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