CORRELATION EFFECTS IN SOLID C60
1992 ◽
Vol 06
(23n24)
◽
pp. 3915-3921
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Keyword(s):
The bandgap of solid C 60 is found to be 2.3±0.1 eV . The on-site molecular C 60 Coulomb interaction (U) as determined from the KVV C 60 Auger spectrum is found to be 1.6 ±.2 eV . This value of U is shown to be consistent with Frenkel type molecular excitons in the 1.5–2 eV range. These results lead us to suggest that doped C 60 should be considered as a highly correlated system with U/W comparable to that in high T c cuprates. The Auger spectroscpoy results are consistent with a rather long range Coulomb interaction on a single bucky ball indicating that a Hubbard model is not suitable to describe the electronic structure of a C 60 molecule.
1998 ◽
Vol 58
(20)
◽
pp. 13506-13509
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1998 ◽
Vol 67
(5)
◽
pp. 1682-1687
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Keyword(s):
1998 ◽
Vol 308
(3-4)
◽
pp. 301-311
◽
2011 ◽
Vol 25
(06)
◽
pp. 747-756
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2014 ◽
Vol 107
(5)
◽
pp. 57010
◽
Keyword(s):
1991 ◽
Vol 177
(1-3)
◽
pp. 578-584
◽
2001 ◽
Vol 53
(4)
◽
pp. 532-538
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