Nucleation Stage for the Oriented Growth of Tantalum Sulfide Monolayers on Au(111)

Thais Chagas; Kai Mehlich; Abdus Samad; Catherine Grover; Daniela Dombrowski; Jiaqi Cai; Udo Schwingenschlögl; Carsten Busse

doi:10.1021/acs.jpcc.3c00234

Nucleation Stage for the Oriented Growth of Tantalum Sulfide Monolayers on Au(111)

Thais Chagas, Kai Mehlich, Abdus Samad, Catherine Grover, Daniela Dombrowski, Jiaqi Cai, Udo Schwingenschlögl, Carsten Busse

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

1 Scopus citations

Abstract

We study the nucleation stage in the epitaxial growth of monolayer TaS2 as a model system for monolayer transition-metal sulfides. The growth was done under ultrahigh-vacuum conditions with Au(111) as a substrate on which the metal atoms are evaporated, and the sulfur is provided from a background of H2S. Using scanning tunneling microscopy, we find atomic-scale protrusions with a well-defined triangular shape that act as nuclei for the further growth of extended tantalum sulfide monolayers. We identify these protrusions as TaS3 using density functional theory. We propose that their unique orientation is the cause of the well-defined orientation of a complete TaS2 layer found under favorable growth conditions.

Original language	English (US)
Journal	The Journal of Physical Chemistry C
DOIs	https://doi.org/10.1021/acs.jpcc.3c00234
State	Published - Mar 13 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-03-16
Acknowledgements: The authors acknowledge technical assistance from D. Rybakowski. We also thank T. Michely (Universität zu Köln) for continuous support and V. Enenkel (University of Konstanz) for discussions. T.C. acknowledges financial support from CAPES/PDSE/Process number {-88881.188652/2018-01} and the Alexander von Humboldt Foundation. The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).

ASJC Scopus subject areas

Surfaces, Coatings and Films
General Energy
Physical and Theoretical Chemistry
Electronic, Optical and Magnetic Materials

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title = "Nucleation Stage for the Oriented Growth of Tantalum Sulfide Monolayers on Au(111)",

abstract = "We study the nucleation stage in the epitaxial growth of monolayer TaS2 as a model system for monolayer transition-metal sulfides. The growth was done under ultrahigh-vacuum conditions with Au(111) as a substrate on which the metal atoms are evaporated, and the sulfur is provided from a background of H2S. Using scanning tunneling microscopy, we find atomic-scale protrusions with a well-defined triangular shape that act as nuclei for the further growth of extended tantalum sulfide monolayers. We identify these protrusions as TaS3 using density functional theory. We propose that their unique orientation is the cause of the well-defined orientation of a complete TaS2 layer found under favorable growth conditions.",

author = "Thais Chagas and Kai Mehlich and Abdus Samad and Catherine Grover and Daniela Dombrowski and Jiaqi Cai and Udo Schwingenschl{\"o}gl and Carsten Busse",

note = "KAUST Repository Item: Exported on 2023-03-16 Acknowledgements: The authors acknowledge technical assistance from D. Rybakowski. We also thank T. Michely (Universit{\"a}t zu K{\"o}ln) for continuous support and V. Enenkel (University of Konstanz) for discussions. T.C. acknowledges financial support from CAPES/PDSE/Process number {-88881.188652/2018-01} and the Alexander von Humboldt Foundation. The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).",

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doi = "10.1021/acs.jpcc.3c00234",

language = "English (US)",

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T1 - Nucleation Stage for the Oriented Growth of Tantalum Sulfide Monolayers on Au(111)

AU - Chagas, Thais

AU - Mehlich, Kai

AU - Samad, Abdus

AU - Grover, Catherine

AU - Dombrowski, Daniela

AU - Cai, Jiaqi

AU - Schwingenschlögl, Udo

AU - Busse, Carsten

N1 - KAUST Repository Item: Exported on 2023-03-16 Acknowledgements: The authors acknowledge technical assistance from D. Rybakowski. We also thank T. Michely (Universität zu Köln) for continuous support and V. Enenkel (University of Konstanz) for discussions. T.C. acknowledges financial support from CAPES/PDSE/Process number {-88881.188652/2018-01} and the Alexander von Humboldt Foundation. The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).

PY - 2023/3/13

Y1 - 2023/3/13

N2 - We study the nucleation stage in the epitaxial growth of monolayer TaS2 as a model system for monolayer transition-metal sulfides. The growth was done under ultrahigh-vacuum conditions with Au(111) as a substrate on which the metal atoms are evaporated, and the sulfur is provided from a background of H2S. Using scanning tunneling microscopy, we find atomic-scale protrusions with a well-defined triangular shape that act as nuclei for the further growth of extended tantalum sulfide monolayers. We identify these protrusions as TaS3 using density functional theory. We propose that their unique orientation is the cause of the well-defined orientation of a complete TaS2 layer found under favorable growth conditions.

AB - We study the nucleation stage in the epitaxial growth of monolayer TaS2 as a model system for monolayer transition-metal sulfides. The growth was done under ultrahigh-vacuum conditions with Au(111) as a substrate on which the metal atoms are evaporated, and the sulfur is provided from a background of H2S. Using scanning tunneling microscopy, we find atomic-scale protrusions with a well-defined triangular shape that act as nuclei for the further growth of extended tantalum sulfide monolayers. We identify these protrusions as TaS3 using density functional theory. We propose that their unique orientation is the cause of the well-defined orientation of a complete TaS2 layer found under favorable growth conditions.

UR - http://hdl.handle.net/10754/690344

UR - https://pubs.acs.org/doi/10.1021/acs.jpcc.3c00234

U2 - 10.1021/acs.jpcc.3c00234

DO - 10.1021/acs.jpcc.3c00234

M3 - Article

SN - 1932-7447

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

ER -

Nucleation Stage for the Oriented Growth of Tantalum Sulfide Monolayers on Au(111)

Abstract

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