Size-dependent dissociation of small cobalt clusters on ultrathin NaCl films

Zhe Li; Hsin Yi Tiffany Chen; Koen Schouteden; Thomas Picot; Arnaud Hillion; Gianfranco Pacchioni; Chris Van Haesendonck; Ewald Janssens; Peter Lievens

doi:10.1007/s12274-017-1520-8

Size-dependent dissociation of small cobalt clusters on ultrathin NaCl films

Zhe Li^*
, Hsin Yi Tiffany Chen
, Koen Schouteden
, Thomas Picot
, Arnaud Hillion
, Gianfranco Pacchioni
, Chris Van Haesendonck
, Ewald Janssens
, Peter Lievens

^*Corresponding author for this work

KU Leuven
Dalian University of Technology
National Tsing Hua University
University of Milan - Bicocca

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Mass-selected anionic cobalt clusters of two different sizes (Co₂ and Co₁₃) were deposited onto ultrathin NaCl films grown on an Au(111) substrate. Using scanning tunneling microscopy experiments and density functional theory simulations, we show that the deposited Co₂ cluster dissociates and that the resulting Co atoms dope the NaCl surface by substituting Na ions. In contrast, the larger Co₁₃ cluster does not dissociate and remains stable on top of the NaCl film. The size-dependent fragmentation of clusters is an important aspect in the understanding of the chemical interaction between size-selected small aggregates of atoms and supporting surfaces. [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	1832-1839
Number of pages	8
Journal	Nano Research
Volume	10
Issue number	5
DOIs	https://doi.org/10.1007/s12274-017-1520-8
State	Published - 1 May 2017
Externally published	Yes

Keywords

cobalt clusters
density functional theory
mass selection
scanning tunneling microscopy
size-dependent fragmentation

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10.1007/s12274-017-1520-8

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title = "Size-dependent dissociation of small cobalt clusters on ultrathin NaCl films",

abstract = "Mass-selected anionic cobalt clusters of two different sizes (Co2 and Co13) were deposited onto ultrathin NaCl films grown on an Au(111) substrate. Using scanning tunneling microscopy experiments and density functional theory simulations, we show that the deposited Co2 cluster dissociates and that the resulting Co atoms dope the NaCl surface by substituting Na ions. In contrast, the larger Co13 cluster does not dissociate and remains stable on top of the NaCl film. The size-dependent fragmentation of clusters is an important aspect in the understanding of the chemical interaction between size-selected small aggregates of atoms and supporting surfaces. [Figure not available: see fulltext.]",

keywords = "cobalt clusters, density functional theory, mass selection, scanning tunneling microscopy, size-dependent fragmentation",

author = "Zhe Li and Chen, \{Hsin Yi Tiffany\} and Koen Schouteden and Thomas Picot and Arnaud Hillion and Gianfranco Pacchioni and \{Van Haesendonck\}, Chris and Ewald Janssens and Peter Lievens",

note = "Publisher Copyright: {\textcopyright} 2017, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.",

year = "2017",

month = may,

day = "1",

doi = "10.1007/s12274-017-1520-8",

language = "英语",

volume = "10",

pages = "1832--1839",

journal = "Nano Research",

issn = "1998-0124",

publisher = "Tsinghua University Press",

number = "5",

}

TY - JOUR

T1 - Size-dependent dissociation of small cobalt clusters on ultrathin NaCl films

AU - Li, Zhe

AU - Chen, Hsin Yi Tiffany

AU - Schouteden, Koen

AU - Picot, Thomas

AU - Hillion, Arnaud

AU - Pacchioni, Gianfranco

AU - Van Haesendonck, Chris

AU - Janssens, Ewald

AU - Lievens, Peter

PY - 2017/5/1

Y1 - 2017/5/1

N2 - Mass-selected anionic cobalt clusters of two different sizes (Co2 and Co13) were deposited onto ultrathin NaCl films grown on an Au(111) substrate. Using scanning tunneling microscopy experiments and density functional theory simulations, we show that the deposited Co2 cluster dissociates and that the resulting Co atoms dope the NaCl surface by substituting Na ions. In contrast, the larger Co13 cluster does not dissociate and remains stable on top of the NaCl film. The size-dependent fragmentation of clusters is an important aspect in the understanding of the chemical interaction between size-selected small aggregates of atoms and supporting surfaces. [Figure not available: see fulltext.]

AB - Mass-selected anionic cobalt clusters of two different sizes (Co2 and Co13) were deposited onto ultrathin NaCl films grown on an Au(111) substrate. Using scanning tunneling microscopy experiments and density functional theory simulations, we show that the deposited Co2 cluster dissociates and that the resulting Co atoms dope the NaCl surface by substituting Na ions. In contrast, the larger Co13 cluster does not dissociate and remains stable on top of the NaCl film. The size-dependent fragmentation of clusters is an important aspect in the understanding of the chemical interaction between size-selected small aggregates of atoms and supporting surfaces. [Figure not available: see fulltext.]

KW - cobalt clusters

KW - density functional theory

KW - mass selection

KW - scanning tunneling microscopy

KW - size-dependent fragmentation

UR - https://www.scopus.com/pages/publications/85016040779

U2 - 10.1007/s12274-017-1520-8

DO - 10.1007/s12274-017-1520-8

M3 - 文章

AN - SCOPUS:85016040779

SN - 1998-0124

VL - 10

SP - 1832

EP - 1839

JO - Nano Research

JF - Nano Research

IS - 5

ER -

Size-dependent dissociation of small cobalt clusters on ultrathin NaCl films

Abstract

Keywords

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