Scanning tunneling spectroscopy of a semiconducting heterojunction nanotube on the Au(1 1 1) surface

H. Kim; J. Lee; S. Lee; Y. J. Song; B. Y. Choi; Y. Kuk; S. J. Kahng

doi:10.1016/j.susc.2005.03.001

Scanning tunneling spectroscopy of a semiconducting heterojunction nanotube on the Au(1 1 1) surface

H. Kim, J. Lee, S. Lee, Y. J. Song, B. Y. Choi, Y. Kuk, S. J. Kahng

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

3 Citations (Scopus)

Abstract

The atomic and electronic structures of a single-wall carbon nanotube prepared on the Au(1 1 1) surface was studied. We performed scanning tunneling spectroscopy measurement in a semiconducting nanotube heterojunction, obtaining the local electronic density of states. An interface state was observed within the energy gaps of the semiconducting nanotubes. The interface state is spatially localized within a few nm scales and decays into the two semiconducting CNTs with unequal screening lengths. The interface state is donor-like, possibly originating from a heptagonal atomic structure. The interface state is well-understood, in analogy with that of a conventional semiconductor heterojunction.

Original language	English
Pages (from-to)	241-245
Number of pages	5
Journal	Surface Science
Volume	581
Issue number	2-3
DOIs	https://doi.org/10.1016/j.susc.2005.03.001
Publication status	Published - 2005 May 1

Bibliographical note

Funding Information:
We acknowledge financial support by the Ministry of Science and Technology of Korea (National Creative Research Initiatives and National R&D Project for Nano-Science and Technology), by the Ministry of Commerce, Industry and Energy of Korea (Nano-Standard Project), and by Korea Research Foundation (KRF-2003-015-C00208).

Keywords

Carbon nanotube
Scanning tunneling microscope

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.susc.2005.03.001

Cite this

@article{88c77b95437640f3ab1b7844d7d751d0,

title = "Scanning tunneling spectroscopy of a semiconducting heterojunction nanotube on the Au(1 1 1) surface",

abstract = "The atomic and electronic structures of a single-wall carbon nanotube prepared on the Au(1 1 1) surface was studied. We performed scanning tunneling spectroscopy measurement in a semiconducting nanotube heterojunction, obtaining the local electronic density of states. An interface state was observed within the energy gaps of the semiconducting nanotubes. The interface state is spatially localized within a few nm scales and decays into the two semiconducting CNTs with unequal screening lengths. The interface state is donor-like, possibly originating from a heptagonal atomic structure. The interface state is well-understood, in analogy with that of a conventional semiconductor heterojunction.",

keywords = "Carbon nanotube, Scanning tunneling microscope",

author = "H. Kim and J. Lee and S. Lee and Song, {Y. J.} and Choi, {B. Y.} and Y. Kuk and Kahng, {S. J.}",

note = "Funding Information: We acknowledge financial support by the Ministry of Science and Technology of Korea (National Creative Research Initiatives and National R&D Project for Nano-Science and Technology), by the Ministry of Commerce, Industry and Energy of Korea (Nano-Standard Project), and by Korea Research Foundation (KRF-2003-015-C00208).",

year = "2005",

month = may,

day = "1",

doi = "10.1016/j.susc.2005.03.001",

language = "English",

volume = "581",

pages = "241--245",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

number = "2-3",

}

TY - JOUR

T1 - Scanning tunneling spectroscopy of a semiconducting heterojunction nanotube on the Au(1 1 1) surface

AU - Kim, H.

AU - Lee, J.

AU - Lee, S.

AU - Song, Y. J.

AU - Choi, B. Y.

AU - Kuk, Y.

AU - Kahng, S. J.

N1 - Funding Information: We acknowledge financial support by the Ministry of Science and Technology of Korea (National Creative Research Initiatives and National R&D Project for Nano-Science and Technology), by the Ministry of Commerce, Industry and Energy of Korea (Nano-Standard Project), and by Korea Research Foundation (KRF-2003-015-C00208).

PY - 2005/5/1

Y1 - 2005/5/1

N2 - The atomic and electronic structures of a single-wall carbon nanotube prepared on the Au(1 1 1) surface was studied. We performed scanning tunneling spectroscopy measurement in a semiconducting nanotube heterojunction, obtaining the local electronic density of states. An interface state was observed within the energy gaps of the semiconducting nanotubes. The interface state is spatially localized within a few nm scales and decays into the two semiconducting CNTs with unequal screening lengths. The interface state is donor-like, possibly originating from a heptagonal atomic structure. The interface state is well-understood, in analogy with that of a conventional semiconductor heterojunction.

AB - The atomic and electronic structures of a single-wall carbon nanotube prepared on the Au(1 1 1) surface was studied. We performed scanning tunneling spectroscopy measurement in a semiconducting nanotube heterojunction, obtaining the local electronic density of states. An interface state was observed within the energy gaps of the semiconducting nanotubes. The interface state is spatially localized within a few nm scales and decays into the two semiconducting CNTs with unequal screening lengths. The interface state is donor-like, possibly originating from a heptagonal atomic structure. The interface state is well-understood, in analogy with that of a conventional semiconductor heterojunction.

KW - Carbon nanotube

KW - Scanning tunneling microscope

UR - http://www.scopus.com/inward/record.url?scp=17044420893&partnerID=8YFLogxK

U2 - 10.1016/j.susc.2005.03.001

DO - 10.1016/j.susc.2005.03.001

M3 - Article

AN - SCOPUS:17044420893

SN - 0039-6028

VL - 581

SP - 241

EP - 245

JO - Surface Science

JF - Surface Science

IS - 2-3

ER -

Scanning tunneling spectroscopy of a semiconducting heterojunction nanotube on the Au(1 1 1) surface

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this