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",

author = "Taeyoung Choi and St{\'e}phane Bedwani and Alain Rochefort and Chen, \{Chia Yi\} and Epstein, \{Arthur J.\} and Gupta, \{Jay A.\}",

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T2 - Multistability of tetracyanoethylene on Cu(111)

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

Y1 - 2010/10/13

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

UR - https://www.scopus.com/pages/publications/77958056969

U2 - 10.1021/nl1024563

DO - 10.1021/nl1024563

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SP - 4175

EP - 4180

JO - Nano Letters

JF - Nano Letters

IS - 10

ER -

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

Abstract

Keywords

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