Abstract
39K-NMR spectra of superconducting fulleride K3C60 are obtained in the normal state. The 39K-NMR shifts of two symmetrical lines observed with no quadrupolar-split satellites, that are assigned to the potassium tetrahedral- and octahedral-sites, are found to show the same temperature (T) dependence as the 13C-NMR shifts. From roughly estimated spin-lattice relaxation time, it is found that the conduction-electron density at the potassium site is nearly the same as that at the carbon site. These confirm that the uniform Pauli spin susceptibility, whose T dependence is considered to come from the predicted band effect, causes the reductions of both the 13C- and 39K-NMR shifts with decreasing T. Two experimental facts are pointed out for the T′ site observed.
Original language | English |
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Pages (from-to) | 319-324 |
Number of pages | 6 |
Journal | Physica C: Superconductivity and its applications |
Volume | 302 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1998 Jul 1 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering