Bis(phthalocyaninato)yttrium grown on Au(111): Electronic structure of a single molecule and the stability of two-dimensional films investigated by scanning tunneling microscopy/spectroscopy at 4.8 K

Yanfeng Zhang; Pengfei Guan; Hironari Isshiki; Mingwei Chen; Masahiro Yamashita; Tadahiro Komeda

doi:10.1007/s12274-010-0021-9

Bis(phthalocyaninato)yttrium grown on Au(111): Electronic structure of a single molecule and the stability of two-dimensional films investigated by scanning tunneling microscopy/spectroscopy at 4.8 K

Yanfeng Zhang, Pengfei Guan, Hironari Isshiki, Mingwei Chen, Masahiro Yamashita, Tadahiro Komeda

IMRAM - Division of Measurements

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

14 Citations (Scopus)

Abstract

Scanning tunneling microscopy/spectroscopy (STM/STS) at 4.8 K has been used to examine the growth of a double-decker bis(phthalocyaninato)yttrium (YPc₂) molecule on a reconstructed Au(111) substrate. Local differential conductance spectra (dI/dV) of a single YPc₂ molecule allow the characteristics of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) to be identified. Furthermore, lateral distributions of the local density of states (LDOS) have also been obtained by dI/dV mapping and confirmed by first principles simulations. These electronic feature mappings and theoretical calculations provide a basis for understanding the unique STM morphology of YPc₂, which is usually imaged as an eight-lobed structure. In addition, we demonstrate that bias-dependent STM morphologies and simultaneous dI/dV maps can provide a way of understanding the stability of two-dimensional YPc₂ films.

Original language	English
Pages (from-to)	604-611
Number of pages	8
Journal	Nano Research
Volume	3
Issue number	8
DOIs	https://doi.org/10.1007/s12274-010-0021-9
Publication status	Published - 2010

Keywords

electronic structure
phthalocyanine
Scanning tunneling microscopy/spectroscopy (STM/STS)

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10.1007/s12274-010-0021-9

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@article{958be082c5da44d884adc5df6d49423d,

title = "Bis(phthalocyaninato)yttrium grown on Au(111): Electronic structure of a single molecule and the stability of two-dimensional films investigated by scanning tunneling microscopy/spectroscopy at 4.8 K",

abstract = "Scanning tunneling microscopy/spectroscopy (STM/STS) at 4.8 K has been used to examine the growth of a double-decker bis(phthalocyaninato)yttrium (YPc2) molecule on a reconstructed Au(111) substrate. Local differential conductance spectra (dI/dV) of a single YPc2 molecule allow the characteristics of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) to be identified. Furthermore, lateral distributions of the local density of states (LDOS) have also been obtained by dI/dV mapping and confirmed by first principles simulations. These electronic feature mappings and theoretical calculations provide a basis for understanding the unique STM morphology of YPc2, which is usually imaged as an eight-lobed structure. In addition, we demonstrate that bias-dependent STM morphologies and simultaneous dI/dV maps can provide a way of understanding the stability of two-dimensional YPc2 films.",

keywords = "electronic structure, phthalocyanine, Scanning tunneling microscopy/spectroscopy (STM/STS)",

author = "Yanfeng Zhang and Pengfei Guan and Hironari Isshiki and Mingwei Chen and Masahiro Yamashita and Tadahiro Komeda",

note = "Funding Information: The first author acknowledges the financial support of JSPS (Japan Society for the Promotion of Science). This work was also supported by an International Collaborative Research Grant by the National Institute of Information and Communications Technology of Japan. We also would like to thank the Center for Computational Materials Science, Institute for Materials Research, Tohoku University for supporting the use of the Hitachi SR11000 (model K2) supercomputing system.",

year = "2010",

doi = "10.1007/s12274-010-0021-9",

language = "English",

volume = "3",

pages = "604--611",

journal = "Nano Research",

issn = "1998-0124",

publisher = "Tsinghua University Press",

number = "8",

}

Bis(phthalocyaninato)yttrium grown on Au(111): Electronic structure of a single molecule and the stability of two-dimensional films investigated by scanning tunneling microscopy/spectroscopy at 4.8 K. / Zhang, Yanfeng; Guan, Pengfei; Isshiki, Hironari et al.
In: Nano Research, Vol. 3, No. 8, 2010, p. 604-611.

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

TY - JOUR

T1 - Bis(phthalocyaninato)yttrium grown on Au(111)

T2 - Electronic structure of a single molecule and the stability of two-dimensional films investigated by scanning tunneling microscopy/spectroscopy at 4.8 K

AU - Zhang, Yanfeng

AU - Guan, Pengfei

AU - Isshiki, Hironari

AU - Chen, Mingwei

AU - Yamashita, Masahiro

AU - Komeda, Tadahiro

N1 - Funding Information: The first author acknowledges the financial support of JSPS (Japan Society for the Promotion of Science). This work was also supported by an International Collaborative Research Grant by the National Institute of Information and Communications Technology of Japan. We also would like to thank the Center for Computational Materials Science, Institute for Materials Research, Tohoku University for supporting the use of the Hitachi SR11000 (model K2) supercomputing system.

PY - 2010

Y1 - 2010

N2 - Scanning tunneling microscopy/spectroscopy (STM/STS) at 4.8 K has been used to examine the growth of a double-decker bis(phthalocyaninato)yttrium (YPc2) molecule on a reconstructed Au(111) substrate. Local differential conductance spectra (dI/dV) of a single YPc2 molecule allow the characteristics of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) to be identified. Furthermore, lateral distributions of the local density of states (LDOS) have also been obtained by dI/dV mapping and confirmed by first principles simulations. These electronic feature mappings and theoretical calculations provide a basis for understanding the unique STM morphology of YPc2, which is usually imaged as an eight-lobed structure. In addition, we demonstrate that bias-dependent STM morphologies and simultaneous dI/dV maps can provide a way of understanding the stability of two-dimensional YPc2 films.

AB - Scanning tunneling microscopy/spectroscopy (STM/STS) at 4.8 K has been used to examine the growth of a double-decker bis(phthalocyaninato)yttrium (YPc2) molecule on a reconstructed Au(111) substrate. Local differential conductance spectra (dI/dV) of a single YPc2 molecule allow the characteristics of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) to be identified. Furthermore, lateral distributions of the local density of states (LDOS) have also been obtained by dI/dV mapping and confirmed by first principles simulations. These electronic feature mappings and theoretical calculations provide a basis for understanding the unique STM morphology of YPc2, which is usually imaged as an eight-lobed structure. In addition, we demonstrate that bias-dependent STM morphologies and simultaneous dI/dV maps can provide a way of understanding the stability of two-dimensional YPc2 films.

KW - electronic structure

KW - phthalocyanine

KW - Scanning tunneling microscopy/spectroscopy (STM/STS)

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JO - Nano Research

JF - Nano Research

IS - 8

ER -

Bis(phthalocyaninato)yttrium grown on Au(111): Electronic structure of a single molecule and the stability of two-dimensional films investigated by scanning tunneling microscopy/spectroscopy at 4.8 K

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