Surface structural phase transition induced by the formation of metal-organic networks on the Si(111) - In surface

T. Suzuki; J. Lawrence; J. M. Morbec; P. Kratzer; G. Costantini

doi:10.1039/c9nr07074e

Surface structural phase transition induced by the formation of metal-organic networks on the Si(111) - In surface

T. Suzuki^*, J. Lawrence, J. M. Morbec, P. Kratzer, G. Costantini

^*Corresponding author for this work

Chemistry

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

3 Citations (Scopus)

Abstract

We studied the adsorption of 7,7,8,8-tetracyanoquinodimethane (TCNQ) on the Si(111)- √7 × √3-In surface, a known surface superconductor. Scanning tunneling microscopy shows the development of a surface-confined metal-organic network (SMON) where TCNQ molecules coordinate with indium atoms from the underlying √7 × √3 reconstruction. The formation of the SMON causes a surface structural phase transition from the √7 × √3 reconstruction to a previously unknown 5 × 5 reconstruction of the Si(111)-In surface. Scanning tunneling spectroscopy measurements indicate that the 5 × 5 reconstruction has a stronger insulating character than the √7 × √3 reconstruction. Density-functional-theory calculations are used to evaluate the atomic arrangement and stability of the 5 × 5 and √7 × √3 reconstructions as a function of In coverage, and suggest that the structural phase transition is driven by a slight reduction of the In coverage, caused by the incorporation of indium atoms into the SMON.

Original language	English
Pages (from-to)	21790-21798
Number of pages	9
Journal	Nanoscale
Volume	11
Issue number	45
DOIs	https://doi.org/10.1039/c9nr07074e
Publication status	Published - 7 Dec 2019

Bibliographical note

Funding Information:
This work was partly supported by the funding from the Central Research Institute of Fukuoka University (Grant No. 185008) and the funding by the JSPS KAKENHI (Grant No. 15K04630). Financial support within SFB 1242 “Non-equilibrium dynamics of condensed matter in the time domain” funded by the Deutsche Forschungsgemeinschaft (DFG), project number 278162697, is gratefully acknowledged by JMM and PK. JMM and PK also gratefully acknowledge the computing time granted by the Center for Computational Sciences and Simulation (CCSS) of the University of Duisburg-Essen and provided on the supercomputer magnitUDE (DFG Grants No. INST 20876/209-1 FUGG and No. INST 20876/243-1 FUGG) at the Zentrum für Informations-und Mediendienste (ZIM).

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

ASJC Scopus subject areas

General Materials Science

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10.1039/c9nr07074e

Cite this

@article{68b70606ec504da7af6109017386d9a2,

title = "Surface structural phase transition induced by the formation of metal-organic networks on the Si(111) - In surface",

abstract = "We studied the adsorption of 7,7,8,8-tetracyanoquinodimethane (TCNQ) on the Si(111)- √7 × √3-In surface, a known surface superconductor. Scanning tunneling microscopy shows the development of a surface-confined metal-organic network (SMON) where TCNQ molecules coordinate with indium atoms from the underlying √7 × √3 reconstruction. The formation of the SMON causes a surface structural phase transition from the √7 × √3 reconstruction to a previously unknown 5 × 5 reconstruction of the Si(111)-In surface. Scanning tunneling spectroscopy measurements indicate that the 5 × 5 reconstruction has a stronger insulating character than the √7 × √3 reconstruction. Density-functional-theory calculations are used to evaluate the atomic arrangement and stability of the 5 × 5 and √7 × √3 reconstructions as a function of In coverage, and suggest that the structural phase transition is driven by a slight reduction of the In coverage, caused by the incorporation of indium atoms into the SMON.",

author = "T. Suzuki and J. Lawrence and Morbec, {J. M.} and P. Kratzer and G. Costantini",

note = "Funding Information: This work was partly supported by the funding from the Central Research Institute of Fukuoka University (Grant No. 185008) and the funding by the JSPS KAKENHI (Grant No. 15K04630). Financial support within SFB 1242 “Non-equilibrium dynamics of condensed matter in the time domain” funded by the Deutsche Forschungsgemeinschaft (DFG), project number 278162697, is gratefully acknowledged by JMM and PK. JMM and PK also gratefully acknowledge the computing time granted by the Center for Computational Sciences and Simulation (CCSS) of the University of Duisburg-Essen and provided on the supercomputer magnitUDE (DFG Grants No. INST 20876/209-1 FUGG and No. INST 20876/243-1 FUGG) at the Zentrum f{\"u}r Informations-und Mediendienste (ZIM). Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",

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T1 - Surface structural phase transition induced by the formation of metal-organic networks on the Si(111) - In surface

AU - Suzuki, T.

AU - Lawrence, J.

AU - Morbec, J. M.

AU - Kratzer, P.

AU - Costantini, G.

N1 - Funding Information: This work was partly supported by the funding from the Central Research Institute of Fukuoka University (Grant No. 185008) and the funding by the JSPS KAKENHI (Grant No. 15K04630). Financial support within SFB 1242 “Non-equilibrium dynamics of condensed matter in the time domain” funded by the Deutsche Forschungsgemeinschaft (DFG), project number 278162697, is gratefully acknowledged by JMM and PK. JMM and PK also gratefully acknowledge the computing time granted by the Center for Computational Sciences and Simulation (CCSS) of the University of Duisburg-Essen and provided on the supercomputer magnitUDE (DFG Grants No. INST 20876/209-1 FUGG and No. INST 20876/243-1 FUGG) at the Zentrum für Informations-und Mediendienste (ZIM). Publisher Copyright: © 2019 The Royal Society of Chemistry.

PY - 2019/12/7

Y1 - 2019/12/7

N2 - We studied the adsorption of 7,7,8,8-tetracyanoquinodimethane (TCNQ) on the Si(111)- √7 × √3-In surface, a known surface superconductor. Scanning tunneling microscopy shows the development of a surface-confined metal-organic network (SMON) where TCNQ molecules coordinate with indium atoms from the underlying √7 × √3 reconstruction. The formation of the SMON causes a surface structural phase transition from the √7 × √3 reconstruction to a previously unknown 5 × 5 reconstruction of the Si(111)-In surface. Scanning tunneling spectroscopy measurements indicate that the 5 × 5 reconstruction has a stronger insulating character than the √7 × √3 reconstruction. Density-functional-theory calculations are used to evaluate the atomic arrangement and stability of the 5 × 5 and √7 × √3 reconstructions as a function of In coverage, and suggest that the structural phase transition is driven by a slight reduction of the In coverage, caused by the incorporation of indium atoms into the SMON.

AB - We studied the adsorption of 7,7,8,8-tetracyanoquinodimethane (TCNQ) on the Si(111)- √7 × √3-In surface, a known surface superconductor. Scanning tunneling microscopy shows the development of a surface-confined metal-organic network (SMON) where TCNQ molecules coordinate with indium atoms from the underlying √7 × √3 reconstruction. The formation of the SMON causes a surface structural phase transition from the √7 × √3 reconstruction to a previously unknown 5 × 5 reconstruction of the Si(111)-In surface. Scanning tunneling spectroscopy measurements indicate that the 5 × 5 reconstruction has a stronger insulating character than the √7 × √3 reconstruction. Density-functional-theory calculations are used to evaluate the atomic arrangement and stability of the 5 × 5 and √7 × √3 reconstructions as a function of In coverage, and suggest that the structural phase transition is driven by a slight reduction of the In coverage, caused by the incorporation of indium atoms into the SMON.

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SN - 2040-3364

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JO - Nanoscale

JF - Nanoscale

IS - 45

ER -

Surface structural phase transition induced by the formation of metal-organic networks on the Si(111) - In surface

Abstract

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