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Title: Adsorption and diffusion of Ru adatoms on Ru(0001)-supported graphene: Large-scale first-principles calculations

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4934349· OSTI ID:1234535
 [1];  [1]
  1. Iowa State Univ., Ames, IA (United States)

Large-scale first-principles density functional theory calculations are performed to investigate the adsorption and diffusion of Ru adatoms on monolayer graphene (G) supported on Ru(0001). The G sheet exhibits a periodic moiré-cell superstructure due to lattice mismatch. Within a moiré cell, there are three distinct regions: fcc, hcp, and mound, in which the C6-ring center is above a fcc site, a hcp site, and a surface Ru atom of Ru(0001), respectively. The adsorption energy of a Ru adatom is evaluated at specific sites in these distinct regions. We find the strongest binding at an adsorption site above a C atom in the fcc region, next strongest in the hcp region, then the fcc-hcp boundary (ridge) between these regions, and the weakest binding in the mound region. Behavior is similar to that observed from small-unit-cell calculations of Habenicht et al. [Top. Catal. 57, 69 (2014)], which differ from previous large-scale calculations. We determine the minimum-energy path for local diffusion near the center of the fcc region and obtain a local diffusion barrier of ~0.48 eV. We also estimate a significantly lower local diffusion barrier in the ridge region. These barriers and information on the adsorption energy variation facilitate development of a realistic model for the global potential energy surface for Ru adatoms. Furthermore, this in turn enables simulation studies elucidating diffusion-mediated directed-assembly of Ru nanoclusters during deposition of Ru on G/Ru(0001).

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1234535
Report Number(s):
IS-J-8857; JCPSA6
Journal Information:
Journal of Chemical Physics, Vol. 143, Issue 16; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (46)

The surface science of graphene: Metal interfaces, CVD synthesis, nanoribbons, chemical modifications, and defects journal March 2012
A versatile fabrication method for cluster superlattices journal October 2009
Deposition of metal clusters on single-layer graphene/Ru(0001): Factors that govern cluster growth journal July 2010
Growth morphology and properties of metals on graphene journal December 2015
Monolayer Graphene and h -BN on Metal Substrates as Versatile Templates for Metallic Nanoclusters journal August 2011
Directed assembly of Ru nanoclusters on Ru(0001)-supported graphene: STM studies and atomistic modeling journal August 2012
Adsorption and diffusion of the Rh and Au adatom on graphene moiré/Ru(0001) journal May 2013
Adsorption and Diffusion of 4d and 5d Transition Metal Adatoms on Graphene/Ru(0001) and the Implications for Cluster Nucleation journal October 2013
On the Self‐Diffusion of Ions in a Polyelectrolyte Solution journal May 1962
Note: Effective diffusion coefficient in heterogeneous media journal October 2012
Level set simulation of directed self-assembly during epitaxial growth journal November 2006
Atomistic modeling of Ru nanocluster formation on graphene/Ru(0001): Thermodynamically versus kinetically directed-assembly journal January 2013
Atomistic modeling of the directed-assembly of bimetallic Pt-Ru nanoclusters on Ru(0001)-supported monolayer graphene journal April 2013
Ab initiomolecular dynamics for liquid metals journal January 1993
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Generalized Gradient Approximation Made Simple journal October 1996
Chemical origin of a graphene moiré overlayer on Ru(0001) journal January 2008
First principles study of the graphene/Ru(0001) interface journal February 2009
Size-Selected Monodisperse Nanoclusters on Supported Graphene: Bonding, Isomerism, and Mobility journal October 2012
Exploring the structure and chemical activity of 2-D gold islands on graphene moiré/Ru(0001) journal January 2011
Semiempirical GGA-type density functional constructed with a long-range dispersion correction journal January 2006
Scanning tunneling microscopy of graphene on Ru(0001) journal August 2007
Formation of graphene on Ru(0001) surface journal November 2007
Graphene on Ru(0001): A 25 × 25 Supercell journal September 2008
Comment on “Periodically Rippled Graphene: Growth and Spatially Resolved Electronic Structure” journal August 2008
Structure Determination of the Coincidence Phase of Graphene on Ru(0001) journal April 2010
Periodicity, work function and reactivity of graphene on Ru(0001) from first principles journal April 2010
A climbing image nudged elastic band method for finding saddle points and minimum energy paths journal December 2000
Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points journal December 2000
Growth Mechanism of Metal Clusters on a Graphene/Ru(0001) Template journal February 2014
Comparative study of the nature of chemical bonding of corrugated graphene on Ru(0001) and Rh(111) by electronic structure calculations journal August 2011
Vázquez de Parga et al. Reply: journal August 2008
Inhomogeneous electronic properties of monolayer graphene on Ru(0001) journal April 2011
Arrays of Ru nanoclusters with narrow size distribution templated by monolayer graphene on Ru journal September 2011
Adsorption and diffusion of Rh and Au dimers and trimers on graphene/Ru(0001) journal August 2014
Some aspects of cluster diffusion on surfaces journal July 1982
Quantum size effects in metal nanofilms: Comparison of an electron-gas model and density functional theory calculations journal October 2009
<I>Crystallographic Properties of Ruthenium</I> journal April 2013
The surface energy of metals journal August 1998
Band structure of Au layers on the Ru(0001) and graphene/Ru(0001) surfaces journal February 2012
Nanoscale “Quantum” Islands on Metal Substrates: Microscopy Studies and Electronic Structure Analyses journal July 2010
A theory of thin metal films: electron density, potentials and work function journal May 1976
Surface free energies of solid metals: Estimation from liquid surface tension measurements journal January 1977

Cited By (2)

Electronic effects and fundamental physics studied in molecular interfaces journal January 2018
Reverse-engineering of graphene on metal surfaces: a case study of embedded ruthenium journal October 2018

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