Closed-loop conductance scanning tunneling spectroscopy: demonstrating the equivalence to the open-loop alternative

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Abstract

We demonstrate the validity of using closed-loop z(V) conductance scanning tunneling spectroscopy (STS) measurements for the determination of the effective tunneling barrier by comparing them to more conventional open-loop I(z) measurements. Through the development of a numerical model, the individual contributions to the effective tunneling barrier present in these experiments, such as the work function and the presence of an image charge, are determined quantitatively. This opens up the possibility of determining tunneling barriers of both vacuum and molecular systems in an alternative and more detailed manner
Original languageEnglish
Pages (from-to)1116-1124
Number of pages9
JournalBeilstein journal of nanotechnology
Volume6
DOIs
Publication statusPublished - 2015

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equivalence
Spectroscopy
Scanning
scanning
spectroscopy
Numerical models
Vacuum
vacuum systems
Experiments

Keywords

  • IR-96690
  • METIS-310717

Cite this

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title = "Closed-loop conductance scanning tunneling spectroscopy: demonstrating the equivalence to the open-loop alternative",
abstract = "We demonstrate the validity of using closed-loop z(V) conductance scanning tunneling spectroscopy (STS) measurements for the determination of the effective tunneling barrier by comparing them to more conventional open-loop I(z) measurements. Through the development of a numerical model, the individual contributions to the effective tunneling barrier present in these experiments, such as the work function and the presence of an image charge, are determined quantitatively. This opens up the possibility of determining tunneling barriers of both vacuum and molecular systems in an alternative and more detailed manner",
keywords = "IR-96690, METIS-310717",
author = "Chris Hellenthal and Kai Sotthewes and Siekman, {Martin Herman} and Kooij, {Ernst S.} and Zandvliet, {Henricus J.W.}",
note = "Open access",
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language = "English",
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publisher = "Beilstein-Institut Zur Forderung der Chemischen Wissenschaften",

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T1 - Closed-loop conductance scanning tunneling spectroscopy: demonstrating the equivalence to the open-loop alternative

AU - Hellenthal, Chris

AU - Sotthewes, Kai

AU - Siekman, Martin Herman

AU - Kooij, Ernst S.

AU - Zandvliet, Henricus J.W.

N1 - Open access

PY - 2015

Y1 - 2015

N2 - We demonstrate the validity of using closed-loop z(V) conductance scanning tunneling spectroscopy (STS) measurements for the determination of the effective tunneling barrier by comparing them to more conventional open-loop I(z) measurements. Through the development of a numerical model, the individual contributions to the effective tunneling barrier present in these experiments, such as the work function and the presence of an image charge, are determined quantitatively. This opens up the possibility of determining tunneling barriers of both vacuum and molecular systems in an alternative and more detailed manner

AB - We demonstrate the validity of using closed-loop z(V) conductance scanning tunneling spectroscopy (STS) measurements for the determination of the effective tunneling barrier by comparing them to more conventional open-loop I(z) measurements. Through the development of a numerical model, the individual contributions to the effective tunneling barrier present in these experiments, such as the work function and the presence of an image charge, are determined quantitatively. This opens up the possibility of determining tunneling barriers of both vacuum and molecular systems in an alternative and more detailed manner

KW - IR-96690

KW - METIS-310717

U2 - 10.3762/bjnano.6.113

DO - 10.3762/bjnano.6.113

M3 - Article

VL - 6

SP - 1116

EP - 1124

JO - Beilstein journal of nanotechnology

JF - Beilstein journal of nanotechnology

SN - 2190-4286

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