Electrical manipulation of spin states in a single electrostatically gated transition-metal complex

Edgar A Osorio; Kasper Moth-Poulsen; Herre S J van der Zant; Jens Paaske; Per Hedegård; Karsten Flensberg; Jesper Bendix; Thomas Bjørnholm

doi:10.1021/nl9029785

Electrical manipulation of spin states in a single electrostatically gated transition-metal complex

Edgar A Osorio, Kasper Moth-Poulsen, Herre S J van der Zant, Jens Paaske, Per Hedegård, Karsten Flensberg, Jesper Bendix, Thomas Bjørnholm

121 Citations (Scopus)

2774 Downloads (Pure)

Abstract

We demonstrate an electrically controlled high-spin (S = 5/2) to low-spin (S = 112) transition in a three-terminal device incorporating a single Mn ²⁺ ion coordinated by two terpyridine ligands. By adjusting the gate-voltage we reduce the terpyridine moiety and thereby strengthen the ligand-field on the Mn-atom. Adding a single electron thus stabilizes the low-spin configuration and the corresponding sequential tunnelling current is suppressed by spin-blockade. From low-temperature inelastic cotunneling spectroscopy, we infer the magnetic excitation spectrum of the molecule and uncover also a strongly gate-dependent singlet-triplet splitting on the low-spin side. The measured bias-spectroscopy is shown to be consistent with an exact diagonalization of the Mn-complex, and an interpretation of the data is given in terms of a simplified effective model.

Original language	English
Journal	Nano Letters
Volume	10
Issue number	1
Pages (from-to)	105-10
Number of pages	6
ISSN	1530-6984
DOIs	https://doi.org/10.1021/nl9029785
Publication status	Published - 13 Jan 2010

Access to Document

10.1021/nl9029785

NanoLett2009 Mn SuppInfo Submitted manuscript, 1.36 MB
NanoLett2009 Mn Proof, 3.4 MB

Cite this

@article{191bd8e3fb7f4136b423466e20af86ba,

title = "Electrical manipulation of spin states in a single electrostatically gated transition-metal complex",

abstract = "We demonstrate an electrically controlled high-spin (S = 5/2) to low-spin (S = 112) transition in a three-terminal device incorporating a single Mn 2+ ion coordinated by two terpyridine ligands. By adjusting the gate-voltage we reduce the terpyridine moiety and thereby strengthen the ligand-field on the Mn-atom. Adding a single electron thus stabilizes the low-spin configuration and the corresponding sequential tunnelling current is suppressed by spin-blockade. From low-temperature inelastic cotunneling spectroscopy, we infer the magnetic excitation spectrum of the molecule and uncover also a strongly gate-dependent singlet-triplet splitting on the low-spin side. The measured bias-spectroscopy is shown to be consistent with an exact diagonalization of the Mn-complex, and an interpretation of the data is given in terms of a simplified effective model.",

author = "Osorio, {Edgar A} and Kasper Moth-Poulsen and {van der Zant}, {Herre S J} and Jens Paaske and Per Hedeg{\aa}rd and Karsten Flensberg and Jesper Bendix and Thomas Bj{\o}rnholm",

year = "2010",

month = jan,

day = "13",

doi = "10.1021/nl9029785",

language = "English",

volume = "10",

pages = "105--10",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "1",

}

TY - JOUR

T1 - Electrical manipulation of spin states in a single electrostatically gated transition-metal complex

AU - Osorio, Edgar A

AU - Moth-Poulsen, Kasper

AU - van der Zant, Herre S J

AU - Paaske, Jens

AU - Hedegård, Per

AU - Flensberg, Karsten

AU - Bendix, Jesper

AU - Bjørnholm, Thomas

PY - 2010/1/13

Y1 - 2010/1/13

N2 - We demonstrate an electrically controlled high-spin (S = 5/2) to low-spin (S = 112) transition in a three-terminal device incorporating a single Mn 2+ ion coordinated by two terpyridine ligands. By adjusting the gate-voltage we reduce the terpyridine moiety and thereby strengthen the ligand-field on the Mn-atom. Adding a single electron thus stabilizes the low-spin configuration and the corresponding sequential tunnelling current is suppressed by spin-blockade. From low-temperature inelastic cotunneling spectroscopy, we infer the magnetic excitation spectrum of the molecule and uncover also a strongly gate-dependent singlet-triplet splitting on the low-spin side. The measured bias-spectroscopy is shown to be consistent with an exact diagonalization of the Mn-complex, and an interpretation of the data is given in terms of a simplified effective model.

AB - We demonstrate an electrically controlled high-spin (S = 5/2) to low-spin (S = 112) transition in a three-terminal device incorporating a single Mn 2+ ion coordinated by two terpyridine ligands. By adjusting the gate-voltage we reduce the terpyridine moiety and thereby strengthen the ligand-field on the Mn-atom. Adding a single electron thus stabilizes the low-spin configuration and the corresponding sequential tunnelling current is suppressed by spin-blockade. From low-temperature inelastic cotunneling spectroscopy, we infer the magnetic excitation spectrum of the molecule and uncover also a strongly gate-dependent singlet-triplet splitting on the low-spin side. The measured bias-spectroscopy is shown to be consistent with an exact diagonalization of the Mn-complex, and an interpretation of the data is given in terms of a simplified effective model.

U2 - 10.1021/nl9029785

DO - 10.1021/nl9029785

M3 - Journal article

C2 - 20000819

SN - 1530-6984

VL - 10

SP - 105

EP - 110

JO - Nano Letters

JF - Nano Letters

IS - 1

ER -

Electrical manipulation of spin states in a single electrostatically gated transition-metal complex

Abstract

Access to Document

Fingerprint

Cite this