Reversible single spin control of individual magnetic molecule by hydrogen atom adsorption

Liwei Liu; Kai Yang; Yuhang Jiang; Boqun Song; Wende Xiao; Linfei Li; Haitao Zhou; Yeliang Wang; Shixuan Du; Min Ouyang; Werner A. Hofer; Antonio H. Castro Neto; Hong Jun Gao

doi:10.1038/srep01210

Reversible single spin control of individual magnetic molecule by hydrogen atom adsorption

Liwei Liu, Kai Yang, Yuhang Jiang, Boqun Song, Wende Xiao, Linfei Li, Haitao Zhou, Yeliang Wang, Shixuan Du, Min Ouyang, Werner A. Hofer, Antonio H. Castro Neto, Hong Jun Gao^*

^*Corresponding author for this work

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

108 Citations (Scopus)

Abstract

The reversible control of a single spin of an atom or a molecule is of great interest in Kondo physics and a potential application in spin based electronics. Here we demonstrate that the Kondo resonance of manganese phthalocyanine molecules on a Au(111) substrate have been reversibly switched off and on via a robust route through attachment and detachment of single hydrogen atom to the magnetic core of the molecule. As further revealed by density functional theory calculations, even though the total number of electrons of the Mn ion remains almost the same in the process, gaining one single hydrogen atom leads to redistribution of charges within 3d orbitals with a reduction of the molecular spin state from S = 3/2 to S = 1 that directly contributes to the Kondo resonance disappearance. This process is reversed by a local voltage pulse or thermal annealing to desorb the hydrogen atom.

Original language	English
Article number	1210
Journal	Scientific Reports
Volume	3
DOIs	https://doi.org/10.1038/srep01210
Publication status	Published - 2013
Externally published	Yes

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abstract = "The reversible control of a single spin of an atom or a molecule is of great interest in Kondo physics and a potential application in spin based electronics. Here we demonstrate that the Kondo resonance of manganese phthalocyanine molecules on a Au(111) substrate have been reversibly switched off and on via a robust route through attachment and detachment of single hydrogen atom to the magnetic core of the molecule. As further revealed by density functional theory calculations, even though the total number of electrons of the Mn ion remains almost the same in the process, gaining one single hydrogen atom leads to redistribution of charges within 3d orbitals with a reduction of the molecular spin state from S = 3/2 to S = 1 that directly contributes to the Kondo resonance disappearance. This process is reversed by a local voltage pulse or thermal annealing to desorb the hydrogen atom.",

author = "Liwei Liu and Kai Yang and Yuhang Jiang and Boqun Song and Wende Xiao and Linfei Li and Haitao Zhou and Yeliang Wang and Shixuan Du and Min Ouyang and Hofer, {Werner A.} and {Castro Neto}, {Antonio H.} and Gao, {Hong Jun}",

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T1 - Reversible single spin control of individual magnetic molecule by hydrogen atom adsorption

AU - Liu, Liwei

AU - Yang, Kai

AU - Jiang, Yuhang

AU - Song, Boqun

AU - Xiao, Wende

AU - Li, Linfei

AU - Zhou, Haitao

AU - Wang, Yeliang

AU - Du, Shixuan

AU - Ouyang, Min

AU - Hofer, Werner A.

AU - Castro Neto, Antonio H.

AU - Gao, Hong Jun

PY - 2013

Y1 - 2013

N2 - The reversible control of a single spin of an atom or a molecule is of great interest in Kondo physics and a potential application in spin based electronics. Here we demonstrate that the Kondo resonance of manganese phthalocyanine molecules on a Au(111) substrate have been reversibly switched off and on via a robust route through attachment and detachment of single hydrogen atom to the magnetic core of the molecule. As further revealed by density functional theory calculations, even though the total number of electrons of the Mn ion remains almost the same in the process, gaining one single hydrogen atom leads to redistribution of charges within 3d orbitals with a reduction of the molecular spin state from S = 3/2 to S = 1 that directly contributes to the Kondo resonance disappearance. This process is reversed by a local voltage pulse or thermal annealing to desorb the hydrogen atom.

AB - The reversible control of a single spin of an atom or a molecule is of great interest in Kondo physics and a potential application in spin based electronics. Here we demonstrate that the Kondo resonance of manganese phthalocyanine molecules on a Au(111) substrate have been reversibly switched off and on via a robust route through attachment and detachment of single hydrogen atom to the magnetic core of the molecule. As further revealed by density functional theory calculations, even though the total number of electrons of the Mn ion remains almost the same in the process, gaining one single hydrogen atom leads to redistribution of charges within 3d orbitals with a reduction of the molecular spin state from S = 3/2 to S = 1 that directly contributes to the Kondo resonance disappearance. This process is reversed by a local voltage pulse or thermal annealing to desorb the hydrogen atom.

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Reversible single spin control of individual magnetic molecule by hydrogen atom adsorption

Abstract

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