Electron-induced excitation of vibrations of Ce atoms inside a C-80 cage

Strozecka, A.; Larsson, J.A.; Dennis, T.J.S.; Dybek, A.; Myslivecek, J.; Muthukumar, K.; Voigtländer, B.

doi:10.1103/PhysRevB.83.165414

Journal Article

Electron-induced excitation of vibrations of Ce atoms inside a C-80 cage

Strozecka, A.FZJ* ; Muthukumar, K.FZJ* ; Larsson, J. A.FZJ* ; Dybek, A.FZJ* ; Dennis, T. J. S.FZJ* ; Myslivecek, J.FZJ* ; Voigtländer, B.FZJ*

2011
APS College Park, Md.

Physical review / B 83(16), 165414 (2011) [10.1103/PhysRevB.83.165414]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10929 doi:10.1103/PhysRevB.83.165414

Abstract: Inelastic electron tunneling spectroscopy of Ce-2@C-80 dimetallofullerenes reveals a low-energy inelastic excitation that is interpreted using ab initio calculations and associated with the movements of encapsulated Ce atoms inside the C-80 cage. The electron-vibration interaction in Ce-2@C-80 is unusually high, inducing a pronounced zero-bias anomaly in differential conductance of Ce-2@C-80. Our observations show that the atoms encapsulated in fullerene cages can actively participate in determining the properties of molecular junctions.

Keyword(s): J

Classification:

Physics, Condensed Matter

Note: This work was supported by the FP6 Marie Curie Early Stage Training Network NANOCAGE (MEST-CT-2004-50-6854), Science Foundation Ireland, and the Ministry of Education of the Czech Republic (MSM 0021620834). We acknowledge the SFI/HEA Irish Centre for High-End Computing (ICHEC) for generous allotment of computer resources. We thank J. I. Pascual and K. J. Franke for many helpful discussions.

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