Structural and electronic properties of double Pb chains on the Si(553)-Au surface

Nita, Paweł; G, Zawadzki; Krawiec, Mariusz; Jałochowski, M.

doi:10.1103/physrevb.84.085453

Cited by 13 publications

(7 citation statements)

References 42 publications

(89 reference statements)

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“…1(a). A similar but single band has been observed in the electronic structure of Pb chains grown on the Si(553)-Au28 and Si(335)-Au2930 surfaces and has been reported to be the 6 p band of lead. These bands are shown in the high resolution photoemission map close to the Fermi level, Fig.…”

Section: Resultssupporting

confidence: 69%

Purely one-dimensional bands with a giant spin-orbit splitting: Pb nanoribbons on Si(553) surface

Kopciuszyński

Krawiec

Zdyb

et al. 2017

Sci Rep

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We report on a giant Rashba type splitting of metallic bands observed in one-dimensional structures prepared on a vicinal silicon substrate. A single layer of Pb on Si(553) orders this vicinal surface making perfectly regular distribution of monatomic steps. Although there is only one layer of Pb, the system reveals very strong metallic and purely one-dimensional character, which manifests itself in multiple surface state bands crossing the Fermi level in the direction parallel to the step edges and a small band gap in the perpendicular direction. As shown by spin-polarized photoemission and density functional theory calculations these surface state bands are spin-polarized and completely decoupled from the rest of the system. The experimentally observed spin splitting of 0.6 eV at room temperature is the largest found to now in the silicon-based metallic nanostructures, which makes the considered system a promising candidate for application in spintronic devices.

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Section: Resultssupporting

confidence: 69%

Purely one-dimensional bands with a giant spin-orbit splitting: Pb nanoribbons on Si(553) surface

Kopciuszyński

Krawiec

Zdyb

et al. 2017

Sci Rep

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“…Due to a regular morphology of the Si(553)-Au surface, featuring equally spaced steps and a low number of defects [29][30][31][32], it was possible to observe an unusual long-range one-dimensional mobility of individual Pb atoms. The STM topography images show that Pb atoms move along the step edges on long distances, several dozens nanometers or even longer, limited by defects.…”

Section: Introductionmentioning

confidence: 99%

Surface diffusion of Pb atoms on the Si(553)-Au surface in narrow quasi-one-dimensional channels

et al. 2014

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The one-dimensional diffusion of individual Pb atoms on the Si(553)-Au surface has been investigated by a combination of scanning tunneling microscopy (STM), spectroscopy (STS), and first-principles density functional theory. The obtained results unambiguously prove that the diffusion channels are limited to a narrow region between Au chains and step edges of the surface. Much wider channels observed in STM and STS data have electronic origin and result from an interaction of Pb with surface atoms. The length of the channels is determined by a distance between defects at step edges of the Si(553)-Au surface. The defects can act as potential barriers or potential wells for Pb atoms, depending on their origin.

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“…Figure e, purple unit cell). This reconstruction is concomitant with a step‐step correlation within the (223)‐facet structure giving rise to the sharp diffraction spots and has been seen for other systems as well . As obvious from Figure (c), these atomic chains are not as free of defects as other nanowire systems on vicinal substrates (e.g., cf.…”

Section: Resultsmentioning

confidence: 52%

Formation of Sn‐Induced Nanowires on Si(557)

Jäger

Pfnür

Fanciulli

et al. 2019

Physica Status Solidi (b)

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In this study, the growth of Sn on Si(557) surfaces by means of scanning tunneling microscopy, low energy electron diffraction and angle resolved photoemission is analyzed. Depending on the Sn submonolayer coverage, various Sn-nanowires are identified. For Sn-coverages above 0.5 ML,)-reconstructions are found. In particular, these phases cover extended (111)-areas, thus leading to an inhomogeneous refacetting of the Si(557) surface. The (223)-facets between the mini-(111) terraces reveal structures, which resemble a Â2 reconstruction along edges. The initial step structure of the Si(557) surface is maintained for Sncoverages below 0.5 ML, showing the α-Sn phase on 3 nm wide (111)terraces. In contrast to the 2D Mott state of α-Sn/Si(111), this confinement seems to quench the correlated electronic phase yielding metallic surface states at 40 K, in accordance with photoemission.

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Structural and electronic properties of double Pb chains on the Si(553)-Au surface

Cited by 13 publications

References 42 publications

Purely one-dimensional bands with a giant spin-orbit splitting: Pb nanoribbons on Si(553) surface

Purely one-dimensional bands with a giant spin-orbit splitting: Pb nanoribbons on Si(553) surface

Surface diffusion of Pb atoms on the Si(553)-Au surface in narrow quasi-one-dimensional channels

Formation of Sn‐Induced Nanowires on Si(557)

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