Geometric phases of electrons due to spinrotation coupling in rotating C_{60} molecules
Abstract
The rapidly rotational motion of C_{60} molecules will provide us with an ingenious way to test Mashhoon’s spinrotation coupling. Since in the lowtemperature phase (below 300 K) of C_{60} solid the noncentral intermolecular potential will cause the precession and nutation of rotating frequency of C_{60} molecules, which gives rise to a timedependent coupling of valency electron spin to the C_{60} rotation, the electron wave functions in rotating C_{60} molecules will acquire geometric phases arising from this timedependent spinrotation coupling. The geometric phases of valency electrons in C_{60} molecules is calculated by using the LewisRiesenfeld invariant theory in the present paper. It is shown that geometric phases of electrons in C_{60} molecules may be measured through the photoelectron spectroscopy of C_{60}. A physically interesting fact that the information about rotation and precession of C_{60} molecules in the orientational ordered (or disordered) phase may be read off from the photoelectron spectroscopy of C_{60} is also demonstrated. Thus, the measurement of variation of C_{60} rotating frequency through the photoelectron spectroscopy will enable us to obtain the noncentral intermolecular potential, which is helpful in investigating the molecular mechanics of C_{60} solid.
 Publication:

Physical Review B
 Pub Date:
 November 2003
 DOI:
 10.1103/PhysRevB.68.195421
 arXiv:
 arXiv:quantph/0301094
 Bibcode:
 2003PhRvB..68s5421S
 Keywords:

 61.48.+c;
 03.65.Vf;
 Fullerenes and fullerenerelated materials;
 Phases: geometric;
 dynamic or topological;
 Quantum Physics
 EPrint:
 5 pages, Latex