A priori theoretical considerations lead one to expect that Rb3C60 is a Mott-Hubbard insulator. This has led to the proposal that the superconductor “ Rb3C60” is, in fact, Rb3-εC60 (ε0.06) and, furthermore, that the vacancies are associated with an unexpected, robust splitting in 87Rb NMR. We demonstrate that vacancies, if present, are unrelated to observed NMR splittings.
ASJC Scopus subject areas
- Physics and Astronomy(all)