39K-NMR observation of temperature-dependent spin susceptibility in K3C60

Susumu Sasaki, Azusa Matsuda, C. W. Chu

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish
Pages (from-to)319-324
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume302
Issue number4
Publication statusPublished - 1998 Jul 1
Externally publishedYes

Fingerprint

Nuclear magnetic resonance
magnetic permeability
nuclear magnetic resonance
Potassium
shift
potassium
fullerides
Temperature
temperature
Spin-lattice relaxation
spin-lattice relaxation
conduction electrons
Relaxation time
Carrier concentration
Carbon
relaxation time
Satellites
causes
carbon

Keywords

  • KNMR
  • Band effect
  • Conduction-electron density
  • KC
  • NMR shifts
  • Pauli spin susceptibility
  • T′ site

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

39K-NMR observation of temperature-dependent spin susceptibility in K3C60 . / Sasaki, Susumu; Matsuda, Azusa; Chu, C. W.

In: Physica C: Superconductivity and its Applications, Vol. 302, No. 4, 01.07.1998, p. 319-324.

Research output: Contribution to journalArticle

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