Mechanically-Controlled Reversible Spin Crossover of Single Fe-Porphyrin Molecules

ACS Nano
Guowen KuangNian Lin

Abstract

Spin-crossover (SCO) molecules are thought to be ideal systems for molecular spintronics when SCO can be precisely controlled at the single-molecule level. This is demonstrated here in the single-molecule junctions of Fe-porphyrin formed in a scanning tunneling microscope. Experimentally, we find that the junctions feature a zero-bias resonance in molecular conductance associated with the Fe spin center. When mechanically stretching or squeezing the junctions by adjusting the tip height, the line shape of the zero-bias resonance varies reversibly. First-principles calculations reveal that widening the junction gap by 2 Å transforms the macrocyclic core hosting the Fe center from a saddle to a planar conformation. This conformational change shortens the Fe-N bonds by 3%, which changes the Fe spin state from S = 2 to S = 1.

References

Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Feb 28, 2002·Physical Review Letters·Nikolaus KnorrKlaus Kern
Apr 13, 2006·Nano Letters·Violeta IancuSaw-Wai Hla
Oct 10, 2006·Physical Review Letters·Heather J KulikNicola Marzari
Mar 16, 2007·Physical Review Letters·N NéelR Berndt
Aug 7, 2007·Physical Review Letters·J J ParksD C Ralph
Oct 27, 2010·Nature Communications·Christian WäckerlinNirmalya Ballav
Aug 1, 2009·Nature Chemistry·T KawakamiM Takano
Jan 17, 2012·Physical Review Letters·Sumanta BhandaryBiplab Sanyal
Mar 31, 2012·Chemical Communications : Chem Comm·Jeong Tae LeeJonathan L Sessler
Apr 20, 2012·The Journal of Physical Chemistry. B·Md Ehesan AliPeter M Oppeneer
May 9, 2012·Angewandte Chemie·Thiruvancheril G GopakumarRichard Berndt
Jul 5, 2012·Nature Communications·Toshio MiyamachiWulf Wulfhekel
Sep 26, 2012·Physical Review Letters·D-J ChoiL Limot
Mar 21, 2013·Angewandte Chemie·Christian WäckerlinNirmalya Ballav
Jul 16, 2013·Nature Nanotechnology·Stefan WagnerHeiko B Weber
Nov 13, 2013·Physical Chemistry Chemical Physics : PCCP·Eliseo Ruiz
Feb 28, 2015·Journal of Physics. Condensed Matter : an Institute of Physics Journal·E BurzuríH S J van der Zant
Nov 17, 2015·ACS Nano·Qiushi ZhangNian Lin
Apr 19, 2016·Nano Letters·Riccardo FrisendaHerre S J van der Zant
Jun 9, 2016·Nature Nanotechnology·Ryan RequistErio Tosatti

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Citations

Apr 24, 2018·Nanoscale·Enrique BurzuríHerre S J van der Zant
Nov 8, 2018·Physical Chemistry Chemical Physics : PCCP·Ahmed Slimani, Kamel Boukheddaden
Feb 20, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Qiushi ZhangNian Lin
Dec 14, 2017·Nano Letters·Sujoy KaranRichard Berndt
Mar 12, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Xiaoyang ZhuQingdao Zeng
Dec 5, 2018·The Journal of Physical Chemistry Letters·Yang-Hui LuoBai-Wang Sun
Jan 21, 2020·The Journal of Physical Chemistry. B·Qiushi ZhangMichel A Van Hove
Nov 6, 2018·The Journal of Physical Chemistry Letters·Daniela RolfKatharina J Franke

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