Manipulation of organic polyradicals in a single-molecule transistor

Jeppe Fock; Martin Christian Leijnse; Karsten Stein Jennum; A.S.  Zyazin; Jens Paaske; Per Hedegård; Mogens Brøndsted Nielsen; H.S.J.  van der Zant

doi:10.1103/PhysRevB.86.235403

Manipulation of organic polyradicals in a single-molecule transistor

Jeppe Fock, Martin Christian Leijnse, Karsten Stein Jennum, A.S. Zyazin, Jens Paaske, Per Hedegård, Mogens Brøndsted Nielsen, H.S.J. van der Zant

16 Citations (Scopus)

Abstract

Inspired by cotunneling spectroscopy of spin-states in a single OPE5-based molecule, we investigate the prospects for electric control of magnetism in purely organic molecules contacted in a three-terminal geometry. Using the gate electrode, the molecule is reversibly switched between three different redox states, with magnetic spectra revealing both ferromagnetic and antiferromagnetic exchange couplings on the molecule. These observations are shown to be captured by an effective low-energy Heisenberg model, which we substantiate microscopically by a simple valence bond description of the molecule. These preliminary findings suggest an interesting route towards functionalized all-organic molecular magnetism.

Original language	English
Journal	Physical Review B
Volume	86
Issue number	23
Number of pages	5
ISSN	2469-9950
DOIs	https://doi.org/10.1103/PhysRevB.86.235403
Publication status	Published - 4 Dec 2012

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10.1103/PhysRevB.86.235403

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title = "Manipulation of organic polyradicals in a single-molecule transistor",

abstract = "Inspired by cotunneling spectroscopy of spin-states in a single OPE5-based molecule, we investigate the prospects for electric control of magnetism in purely organic molecules contacted in a three-terminal geometry. Using the gate electrode, the molecule is reversibly switched between three different redox states, with magnetic spectra revealing both ferromagnetic and antiferromagnetic exchange couplings on the molecule. These observations are shown to be captured by an effective low-energy Heisenberg model, which we substantiate microscopically by a simple valence bond description of the molecule. These preliminary findings suggest an interesting route towards functionalized all-organic molecular magnetism.",

author = "Jeppe Fock and Leijnse, {Martin Christian} and Jennum, {Karsten Stein} and A.S. Zyazin and Jens Paaske and Per Hedeg{\aa}rd and Nielsen, {Mogens Br{\o}ndsted} and {van der Zant}, H.S.J.",

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T1 - Manipulation of organic polyradicals in a single-molecule transistor

AU - Fock, Jeppe

AU - Leijnse, Martin Christian

AU - Jennum, Karsten Stein

AU - Zyazin, A.S.

AU - Paaske, Jens

AU - Hedegård, Per

AU - Nielsen, Mogens Brøndsted

AU - van der Zant, H.S.J.

N1 - 235403

PY - 2012/12/4

Y1 - 2012/12/4

N2 - Inspired by cotunneling spectroscopy of spin-states in a single OPE5-based molecule, we investigate the prospects for electric control of magnetism in purely organic molecules contacted in a three-terminal geometry. Using the gate electrode, the molecule is reversibly switched between three different redox states, with magnetic spectra revealing both ferromagnetic and antiferromagnetic exchange couplings on the molecule. These observations are shown to be captured by an effective low-energy Heisenberg model, which we substantiate microscopically by a simple valence bond description of the molecule. These preliminary findings suggest an interesting route towards functionalized all-organic molecular magnetism.

AB - Inspired by cotunneling spectroscopy of spin-states in a single OPE5-based molecule, we investigate the prospects for electric control of magnetism in purely organic molecules contacted in a three-terminal geometry. Using the gate electrode, the molecule is reversibly switched between three different redox states, with magnetic spectra revealing both ferromagnetic and antiferromagnetic exchange couplings on the molecule. These observations are shown to be captured by an effective low-energy Heisenberg model, which we substantiate microscopically by a simple valence bond description of the molecule. These preliminary findings suggest an interesting route towards functionalized all-organic molecular magnetism.

U2 - 10.1103/PhysRevB.86.235403

DO - 10.1103/PhysRevB.86.235403

M3 - Journal article

SN - 2469-9950

VL - 86

JO - Physical Review B

JF - Physical Review B

IS - 23

ER -

Manipulation of organic polyradicals in a single-molecule transistor

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