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Bibliographic record number: 888820

Journal

Authors: Petrović, Marin; Lazić, Predrag; Runte, Sven; Michely, Thomas; Busse, Carsten; Kralj, Marko
Title: Moiré-regulated self-assembly of cesium adatoms on epitaxial graphene
( Moiré-regulated self-assembly of cesium adatoms on epitaxial graphene )
Source: Physical review. B. (2469-9950) 96 (2017), 8;
Paper type: article
Keywords: graphene ; cesium ; self-assembly ; surface adsorption ; STM ; ARPES ; DFT
( graphene ; cesium ; self-assembly ; surface adsorption ; STM ; ARPES ; DFT )
Abstract:
Upon adsorption onto epitaxial graphene on Ir(111) at room temperature, Cs adatoms donate part of their charge to the substrate, which effectively creates mutually repelling entities that can diffuse across the graphene surface. By using scanning tunneling microscopy at 6 K, an ordered hexagonal structure of Cs adatoms with several rotated domains has been identified. The amount of charge transferred to graphene has been determined from the presented valence-band photoemission data. Density- functional calculations show that the repulsive interaction is additionally modulated by preferential adsorption of Cs to the atop region within the moiré unit cell. Our results provide direct atomistic insight into the self-assembly of individual atoms on epitaxial graphene, and they demonstrate how the moiré structure acts as a perturbation to that process.
Project / theme: EK-H2020-692194
Original language: eng
Citation databases: Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Physics
URL: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.085428
https://doi.org/10.1103/PhysRevB.96.085428
Broj citata:
Altmetric:
DOI: 10.1103/PhysRevB.96.085428
URL cjelovitog rada:
Google Scholar: Moiré-regulated self-assembly of cesium adatoms on epitaxial graphene
Contrib. to CROSBI by: Marin Petrovic (mpetrovic@ifs.hr), 22. Kol. 2017. u 08:37 sati



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