Jaap M. H. Kroes, Fabio Pietrucci, et al.
Journal of Physical Chemistry C
Using the Car-Parrinello method we have investigated theoretically the properties of K6C60 and Rb6C60 crystals. Our results are in very good agreement with available experimental data. We find an interesting pattern of relaxations both in the C60 fullerene cage and in the position of the K ions with respect to an ideal configuration. The relaxation energy gain is 1 eV and is due in comparable amounts to the C60 and the Ks. These energy gains are achieved by relatively small ionic dispalcements. Analysis of the electronic charge density reveals non-rigid-band effects. Similarities and differences with graphite intercalation compounds are discussed. © 1992 The American Physical Society.
Jaap M. H. Kroes, Fabio Pietrucci, et al.
Journal of Physical Chemistry C
Simonetta Iarlori, Giulia Galli, et al.
Physical Review Letters
Ursula Röthlisberger, Wanda Andreoni, et al.
The Journal of Chemical Physics
Mark E. Tuckerman, Michele Parrinello
The Journal of Chemical Physics