Triplet excitation of C 60 and the structure of the crystal at 1.2 K

• Published in: Chemical physics letters Vol. 197; no. 3; pp. 314 - 318
• Main Authors: Groenen, E.J.J., Poluektov, O.G., Matsushita, M., Schmidt, J., van der Waals, J.H., Meijer, G.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1992
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/0009-2614(92)85775-6

Electron-spin-echo experiments at 95 GHz and 1.2 K reveal that the triplet excitation of a single crystal of C 60 is delocalized over either a pair or a chain of C 60 molecules along 〈110〉 directions. Two distinct triplet species have been observed in a one-to-one ratio which verifies the proposed 2 a 0 face-centred cubic superstructure of the crystal at low temperature. The C 60 molecules on the two sublattices differ by a rotation over 60° about 〈111〉 directions.