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APS » Journals » Phys. Rev. B » Volume 72 » Issue 20
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Phys. Rev. B 72, 205414 (2005) [5 pages]

Intramolecular vibronic dynamics in molecular solids: C60

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L. Kjeldgaard1,*, T. Käämbre1,†, J. Schiessling1,‡, I. Marenne2, J. N. O’Shea1,§, J. Schnadt1,**, C. J. Glover3,††, M. Nagasono3,‡‡, D. Nordlund3, M. G. Garnier3,a, L. Qian1, J.-E. Rubensson1, P. Rudolf4,2, N. Mårtensson1,3, J. Nordgren1, and P. A. Brühwiler1,5,b
1Department of Physics, Uppsala University, Box 530, SE-751 21 Uppsala, Sweden
2LISE, Facultès Universitaires Notre Dame de la Paix, Rue de Bruxelles 61, B-5000 Namur, Belgium
3MAX-lab, University of Lund, Box 118, SE-221 00 Lund, Sweden
4Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
5Empa, Materials Science and Technology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland

Received 9 June 2005; published 9 November 2005

Vibronic coupling in solid C60 has been investigated with a combination of resonant photoemission spectroscopy (RPES) and resonant inelastic x-ray scattering (RIXS). Excitation as a function of energy within the lowest unoccupied molecular orbital resonance yielded strong oscillations in intensity and dispersion in RPES, and a strong inelastic component in RIXS. Reconciling these two observations establishes that vibronic coupling in this core hole excitation leads to predominantly inelastic scattering and localization of the excited vibrations on the molecule on a femtosecond time scale. The coupling extends throughout the widths of the frontier valence bands.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.72.205414
DOI:
10.1103/PhysRevB.72.205414
PACS:
79.60.Jv, 33.60.−q, 68.43.Fg, 73.22.−f

*Present address: MAX-lab, University of Lund, Box 118, SE-221 00 Lund, Sweden.

†Present address: Institute of Physics, Tartu University, Riia 142, EE-51014 Tartu, Estonia.

‡Corresponding author. Email address: joachim.schiessling@fysik.uu.se; Present address: MAX-lab, University of Lund, Box 118, SE-221 00 Lund, Sweden.

§Present address: School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom.

**Present address: Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, 8000 Aarhus C, Denmark.

††Present address: Department of Electronic Materials Engineering, Research School of Physical Sciences and Engineering, Australian National University Canberra, Australia.

‡‡Present address: Universität Hamburg, Luruper Chausee 149, 22761 Hamburg, Germany.

aPresent address: Institut de Physique, Université de Neuchâtel rue Breguet 1, 2000 Neuchâtel, Switzerland.

bCorresponding author. Email address: paul.bruehwiler@empa.ch

 
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