Vibrational spectrum of the endohedral Y2C2@C-92 fullerene by Raman spectroscopy: Evidence for tunneling of the diatomic C-2 molecule
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Date
2011-03
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Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
The structure and vibrational spectrum of the novel endohedral fullerene Y2C2@C-92 was studied by Raman spectroscopy, with particular emphasis on the rotational transitions of the diatomic C-2 unit in the low-energy Raman spectrum. We report evidence for tunneling of this unit through the C-2 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.
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Keywords
imaging contrast agent, water-soluble metallofullerenes, cage, single, family, physics, condensed matter
Citation
Burke, B. G.; Chan, J.; Williams, K. A.; Fuhrer, T.; Fu, W. J.; Dorn, H. C.; Puretzky, A. A.; Geohegan, D. B., "Vibrational spectrum of the endohedral Y2C2@C-92 fullerene by Raman spectroscopy: Evidence for tunneling of the diatomic C-2 molecule," Phys. Rev. B 83, 115457 DOI: http://dx.doi.org/10.1103/PhysRevB.83.115457