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Large Conductance Variations in a Mechanosensitive Single-Molecule Junction. / Stefani, Davide; Weiland, Kevin J.; Skripnik, Maxim; Hsu, Chunwei; Perrin, Mickael L.; Mayor, Marcel; Pauly, Fabian; Van Der Zant, Herre S.J.

In: Nano Letters, Vol. 18, No. 9, 2018, p. 5981-5988.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Stefani, D, Weiland, KJ, Skripnik, M, Hsu, C, Perrin, ML, Mayor, M, Pauly, F & Van Der Zant, HSJ 2018, 'Large Conductance Variations in a Mechanosensitive Single-Molecule Junction' Nano Letters, vol. 18, no. 9, pp. 5981-5988. https://doi.org/10.1021/acs.nanolett.8b02810

APA

Vancouver

Author

Stefani, Davide ; Weiland, Kevin J. ; Skripnik, Maxim ; Hsu, Chunwei ; Perrin, Mickael L. ; Mayor, Marcel ; Pauly, Fabian ; Van Der Zant, Herre S.J. / Large Conductance Variations in a Mechanosensitive Single-Molecule Junction. In: Nano Letters. 2018 ; Vol. 18, No. 9. pp. 5981-5988.

BibTeX

@article{5155eb9df2cc44898f9851ae6c83a149,
title = "Large Conductance Variations in a Mechanosensitive Single-Molecule Junction",
abstract = "An appealing feature of molecular electronics is the possibility of inducing changes in the orbital structure through external stimuli. This can provide functionality on the single-molecule level that can be employed for sensing or switching purposes if the associated conductance changes are sizable upon application of the stimuli. Here, we show that the room-temperature conductance of a spring-like molecule can be mechanically controlled up to an order of magnitude by compressing or elongating it. Quantum-chemistry calculations indicate that the large conductance variations are the result of destructive quantum interference effects between the frontier orbitals that can be lifted by applying either compressive or tensile strain to the molecule. When periodically modulating the electrode separation, a conductance modulation at double the driving frequency is observed, providing a direct proof for the presence of quantum interference. Furthermore, oscillations in the conductance occur when the stress built up in the molecule is high enough to allow the anchoring groups to move along the surface in a stick-slip-like fashion. The mechanical control of quantum interference effects results in the largest-gauge factor reported for single-molecule devices up to now, which may open the door for applications in, e.g., a nanoscale mechanosensitive sensing device that is functional at room temperature.",
keywords = "density functional theory, mechanically controlled break-junctions, molecular electronics, nanoscale transport, Quantum interference, single-molecule",
author = "Davide Stefani and Weiland, {Kevin J.} and Maxim Skripnik and Chunwei Hsu and Perrin, {Mickael L.} and Marcel Mayor and Fabian Pauly and {Van Der Zant}, {Herre S.J.}",
year = "2018",
doi = "10.1021/acs.nanolett.8b02810",
language = "English",
volume = "18",
pages = "5981--5988",
journal = "Nano Letters: a journal dedicated to nanoscience and nanotechnology",
issn = "1530-6984",
publisher = "American Chemical Society (ACS)",
number = "9",

}

RIS

TY - JOUR

T1 - Large Conductance Variations in a Mechanosensitive Single-Molecule Junction

AU - Stefani, Davide

AU - Weiland, Kevin J.

AU - Skripnik, Maxim

AU - Hsu, Chunwei

AU - Perrin, Mickael L.

AU - Mayor, Marcel

AU - Pauly, Fabian

AU - Van Der Zant, Herre S.J.

PY - 2018

Y1 - 2018

N2 - An appealing feature of molecular electronics is the possibility of inducing changes in the orbital structure through external stimuli. This can provide functionality on the single-molecule level that can be employed for sensing or switching purposes if the associated conductance changes are sizable upon application of the stimuli. Here, we show that the room-temperature conductance of a spring-like molecule can be mechanically controlled up to an order of magnitude by compressing or elongating it. Quantum-chemistry calculations indicate that the large conductance variations are the result of destructive quantum interference effects between the frontier orbitals that can be lifted by applying either compressive or tensile strain to the molecule. When periodically modulating the electrode separation, a conductance modulation at double the driving frequency is observed, providing a direct proof for the presence of quantum interference. Furthermore, oscillations in the conductance occur when the stress built up in the molecule is high enough to allow the anchoring groups to move along the surface in a stick-slip-like fashion. The mechanical control of quantum interference effects results in the largest-gauge factor reported for single-molecule devices up to now, which may open the door for applications in, e.g., a nanoscale mechanosensitive sensing device that is functional at room temperature.

AB - An appealing feature of molecular electronics is the possibility of inducing changes in the orbital structure through external stimuli. This can provide functionality on the single-molecule level that can be employed for sensing or switching purposes if the associated conductance changes are sizable upon application of the stimuli. Here, we show that the room-temperature conductance of a spring-like molecule can be mechanically controlled up to an order of magnitude by compressing or elongating it. Quantum-chemistry calculations indicate that the large conductance variations are the result of destructive quantum interference effects between the frontier orbitals that can be lifted by applying either compressive or tensile strain to the molecule. When periodically modulating the electrode separation, a conductance modulation at double the driving frequency is observed, providing a direct proof for the presence of quantum interference. Furthermore, oscillations in the conductance occur when the stress built up in the molecule is high enough to allow the anchoring groups to move along the surface in a stick-slip-like fashion. The mechanical control of quantum interference effects results in the largest-gauge factor reported for single-molecule devices up to now, which may open the door for applications in, e.g., a nanoscale mechanosensitive sensing device that is functional at room temperature.

KW - density functional theory

KW - mechanically controlled break-junctions

KW - molecular electronics

KW - nanoscale transport

KW - Quantum interference

KW - single-molecule

UR - http://resolver.tudelft.nl/uuid:5155eb9d-f2cc-4489-8f98-51ae6c83a149

UR - http://www.scopus.com/inward/record.url?scp=85052888903&partnerID=8YFLogxK

U2 - 10.1021/acs.nanolett.8b02810

DO - 10.1021/acs.nanolett.8b02810

M3 - Article

VL - 18

SP - 5981

EP - 5988

JO - Nano Letters: a journal dedicated to nanoscience and nanotechnology

T2 - Nano Letters: a journal dedicated to nanoscience and nanotechnology

JF - Nano Letters: a journal dedicated to nanoscience and nanotechnology

SN - 1530-6984

IS - 9

ER -

ID: 46784359