Partially embedded Pb chains on a vicinal Si(113) surface

Żurawek, Lucyna; Kopciuszyński, M.; Dachniewicz, M.; Stróżak, M.; Krawiec, Mariusz; Jałochowski, M.; Zdyb, R.

doi:10.1103/physrevb.101.195434

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…Figure shows a substantial splitting of the Pb-derived bands, which yields around 0.2 1/Å. A comparable splitting was observed in other Si-supported nanowire systems, including Pb/Si(553), Pb/Si(113), Pt/Si(110), or Pb/Si(100) . On the other hand, the splitting of the Sb-related bands is very small, similar to the case of Sb reconstruction on Si(111) .…”

Section: Results and Discussionsupporting

confidence: 73%

Evidence for Electronically Isolated Atomic Chains: Sb–Pb Structures on the Si(553) Surface

et al. 2021

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Metallic atomic chains weakly coupled to the substrate may be a practical implementation of extreme onedimensional quantum systems. We report a two-step method of assembling one-dimensional Sb atomic chains on an ordered stepped Si(553) surface with Pb nanoribbons. We show that Pb atoms act as a surfactant, induce the dissociation of Sb molecules, and enable the formation of monatomic chains. Combining atomistic modeling within density functional theory with scanning tunneling microscopy and angle-resolved photoemission spectroscopy, we demonstrate that the formed Sb chains are highly strained and at the same time electronically isolated, exhibiting extremely well-defined one-dimensional free-electron like behavior.

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Section: Results and Discussionsupporting

confidence: 73%

Evidence for Electronically Isolated Atomic Chains: Sb–Pb Structures on the Si(553) Surface

et al. 2021

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“…The wave function phase interference of the electrons contributing to the current, depending upon the parameters, can give rise to a total destructive interference for just one spin state, resulting in a fully spin-polarized current for the opposite spin. The 1DLSOC could be a nanowire adsorbed onto a metallic surface with a strong or giant Rashba SOC [54][55][56][57][58][59][60][61][62][63][64][65][66] or a semiconductor nanowire, as in the systems studied in refs. [67,68].…”

Section: Interferometer Design and Model Descriptionmentioning

confidence: 99%

Totally Spin-Polarized Currents in an Interferometer with Spin–Orbit Coupling and the Absence of Magnetic Field Effects

et al. 2022

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The paper studies the electronic current in a one-dimensional lead under the effect of spin–orbit coupling and its injection into a metallic conductor through two contacts, forming a closed loop. When an external potential is applied, the time reversal symmetry is broken and the wave vector k of the circulating electrons that contribute to the current is spin-dependent. As the wave function phase depends upon the vector k, the closed path in the circuit produces spin-dependent current interference. This creates a physical scenario in which a spin-polarized current emerges, even in the absence of external magnetic fields or magnetic materials. It is possible to find points in the system’s parameter space and, depending upon its geometry, the value of the Fermi energy and the spin–orbit intensities, for which the electronic states participating in the current have only one spin, creating a high and totally spin-polarized conductance. For a potential of a few tens of meV, it is possible to obtain a spin-polarized current of the order of μA. The properties of the obtained electronic current qualify the proposed device as a potentially important tool for spintronics applications.

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“…Carrying out observations of reflection high-energy electron diffraction (RHEED) patterns may be helpful in obtaining crystallographic information on nanostructured samples (Smink et al, 2020;Z ˙urawek et al, 2020;Hafez et al, 2022;Choi et al, 2023). In such experiments, the incident electrons line up in a beam that is nearly parallel to the sample surface.…”

Section: Introductionmentioning

confidence: 99%

Identification of Kikuchi lines in electron diffraction patterns collected in small-angle geometry

Mitura,

Szwachta,

Kokosza

et al. 2024

Acta Cryst Sect A

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It is demonstrated that Kikuchi features become clearly visible if reflection high-energy electron diffraction (RHEED) patterns are filtered using digital image processing software. The results of such pattern transformations are shown for SrTiO3 with mixed surface termination for data collected at different azimuths of the incident electron beam. A simplified analytical approach for the theoretical description of filtered Kikuchi patterns is proposed and discussed. Some examples of raw and filtered patterns for thin films are shown. RHEED patterns may be treated as a result of coherent and incoherent scattering of electron waves. The effects of coherent scattering may be considered as those occurring due to wave diffraction by an idealized crystal and, usually, only effects of this type are analysed to obtain structural information on samples investigated with the use of RHEED. However, some incoherent scattering effects mostly caused by thermal vibrations of atoms, known as Kikuchi effects, may also be a source of valuable information on the arrangements of atoms near the surface. Typically, for the case of RHEED, Kikuchi features are hidden in the intensity background and researchers cannot easily recognize them. In this paper, it is shown that the visibility of features of this type can be substantially enhanced using computer graphics methods.

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Partially embedded Pb chains on a vicinal Si(113) surface

Cited by 5 publications

References 36 publications

Evidence for Electronically Isolated Atomic Chains: Sb–Pb Structures on the Si(553) Surface

Evidence for Electronically Isolated Atomic Chains: Sb–Pb Structures on the Si(553) Surface

Totally Spin-Polarized Currents in an Interferometer with Spin–Orbit Coupling and the Absence of Magnetic Field Effects

Identification of Kikuchi lines in electron diffraction patterns collected in small-angle geometry

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