A single molecule kondo switch: Multistability of tetracyanoethylene on Cu(111)

Taeyoung Choi; Stéphane Bedwani; Alain Rochefort; Chia Yi Chen; Arthur J. Epstein; Jay A. Gupta

doi:10.1021/nl1024563

A single molecule kondo switch: Multistability of tetracyanoethylene on Cu(111)

Taeyoung Choi, Stéphane Bedwani, Alain Rochefort, Chia Yi Chen, Arthur J. Epstein, Jay A. Gupta

Department of Physics

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

76 Scopus citations

Abstract

Single tetracyanoethyelene (TCNE) molecules on Cu(111) are reversibly switched among five states by applying voltage pulses with the tip of a scanning tunneling microscope. A pronounced Kondo resonance in tunneling spectroscopy indicates that one of the states is magnetic. Side bands of the Kondo resonance appear at energies which correspond to inter- and intramolecular vibrational modes. Density functional theory suggests that molecular deformation changes the occupancy in TCNE's molecular orbitals, thus producing the magnetic state.

Original language	English
Pages (from-to)	4175-4180
Number of pages	6
Journal	Nano Letters
Volume	10
Issue number	10
DOIs	https://doi.org/10.1021/nl1024563
State	Published - 13 Oct 2010

Keywords

charge transfer
Kondo resonance
organic magnets
Scanning tunneling microscopy
scanning tunneling spectroscopy
tetracyanoethylene

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10.1021/nl1024563

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abstract = "Single tetracyanoethyelene (TCNE) molecules on Cu(111) are reversibly switched among five states by applying voltage pulses with the tip of a scanning tunneling microscope. A pronounced Kondo resonance in tunneling spectroscopy indicates that one of the states is magnetic. Side bands of the Kondo resonance appear at energies which correspond to inter- and intramolecular vibrational modes. Density functional theory suggests that molecular deformation changes the occupancy in TCNE's molecular orbitals, thus producing the magnetic state.",

keywords = "charge transfer, Kondo resonance, organic magnets, Scanning tunneling microscopy, scanning tunneling spectroscopy, tetracyanoethylene",

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AU - Choi, Taeyoung

AU - Bedwani, Stéphane

AU - Rochefort, Alain

AU - Chen, Chia Yi

AU - Epstein, Arthur J.

AU - Gupta, Jay A.

PY - 2010/10/13

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N2 - Single tetracyanoethyelene (TCNE) molecules on Cu(111) are reversibly switched among five states by applying voltage pulses with the tip of a scanning tunneling microscope. A pronounced Kondo resonance in tunneling spectroscopy indicates that one of the states is magnetic. Side bands of the Kondo resonance appear at energies which correspond to inter- and intramolecular vibrational modes. Density functional theory suggests that molecular deformation changes the occupancy in TCNE's molecular orbitals, thus producing the magnetic state.

AB - Single tetracyanoethyelene (TCNE) molecules on Cu(111) are reversibly switched among five states by applying voltage pulses with the tip of a scanning tunneling microscope. A pronounced Kondo resonance in tunneling spectroscopy indicates that one of the states is magnetic. Side bands of the Kondo resonance appear at energies which correspond to inter- and intramolecular vibrational modes. Density functional theory suggests that molecular deformation changes the occupancy in TCNE's molecular orbitals, thus producing the magnetic state.

KW - charge transfer

KW - Kondo resonance

KW - organic magnets

KW - Scanning tunneling microscopy

KW - scanning tunneling spectroscopy

KW - tetracyanoethylene

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JO - Nano Letters

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IS - 10

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A single molecule kondo switch: Multistability of tetracyanoethylene on Cu(111)

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Keywords

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