High sensitivity of the positron-density distribution to the K doping in C60

Y. Lou, X. Lu, G. H. Dai, W. Y. Ching, Y. N. Xu, M. Z. Huang, P. K. Tseng, Y. C. Jean, R. L. Meng, P. H. Hor, C. W. Chu

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Distinct positron lifetimes in C60 and in K3C60 superconductors are observed: a single lifetime (375 ps) in pure C60, and two lifetimes (265 and 425 ps) in K3C60. The positron densities, computed by using the self-consistent orthogonalized linear combination of the atomic-orbital band structure in KxC60 (x=0, 1,2,3, and 6) are presented. The strong dependence of the positron-density distribution on the amount of K doping, varying from interstitital sites outside the ball to the cavity inside the ball, demonstrates the use of the positron to probe local charge densities in C60-based superconductors.

Original languageEnglish
Pages (from-to)2644-2647
Number of pages4
JournalPhysical Review B
Volume46
Issue number4
DOIs
Publication statusPublished - 1992

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'High sensitivity of the positron-density distribution to the K doping in C60'. Together they form a unique fingerprint.

Cite this