Miło nam poinformować, że na okładce czasopisma The Journal of Physical Chemistry C (wolumen 125, wydanie 27) umieszczono grafikę, która przedstawia artystyczne odwzorowanie energii potencjalnej atomu ołowiu na powierzchni Si(553)-Pb-Sb.
Grafika ta nawiązuje do artykułu naszej grupy, autorstwa: M. Dachniewicza, M. Kopciuszyńskiego, L. Żurawek, M. Stróżaka, M. Krawca oraz M. Jałochowskiego, pt: "Evidence for Electronically Isolated Atomic Chains: Sb–Pb Structures on the Si(553) Surface".
Poniżej zamieszczamy zdjęcie okładki wraz, z krótkim opisem pracy (w j. angielskim) oraz odnośnikiem do niej.
J. Phys. Chem. C 2021, 125, 27, 15061–15068
Abstract
Metallic atomic chains weakly coupled to the substrate may be a practical implementation of extreme one-dimensional 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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| This image is an artistic rendition of the potential energy surface of a Pb atom on the Si(553)–Pb–Sb surface with a few Pb atoms hopping along atomic chains of the substrate. These Pb atoms act as a surfactant, induce the dissociation of Sb molecules, and enable the formation of monatomic Sb chains. As a result, the surface consists of alternating atomic Sb and Pb chains on each terrace. The Sb chains are highly strained and at the same time electronically isolated from the substrate, exhibiting extremely well-defined one-dimensional free-electron-like behavior. |
Praca powstała dzięki wparciu Narodowego Centrum Nauki w ramach grantu nr: 2018/31/B/ST3/02370.