Publication Type
Journal
Journal Name
Physical Review B
Publication Date
Volume
83
Issue
11
Abstract
The structure and vibrational spectrum of the novel endohedral fullerene Y2C2@C92 was studied by Raman
spectroscopy, with particular emphasis on the rotational transitions of the diatomic C2 unit in the low-energy
Raman spectrum. We report evidence for tunneling of this unit through the C2 rotation plane and observe
anomalous narrowing in a hindered rotational mode. We also report complementary density functional theory
calculations that support our conclusions and discuss potential applications to quantum computing and nonvolatile
memory devices.
