A new muonium trap in nitrogen-rich diamond discovered by μSR

I. Z. Machi, S. H. Connell, M. Baker, J. P.F. Sellschop, K. Bharuth-Ram, C. G. Fischer, R. W. Nilen, S. F.J. Cox, I. E. Butler

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


We recently reported on the discovery of a new muonium configuration, MuX, in nitrogen-rich diamond. The MuX, observed in combined transverse and longitudinal field muon spin relaxation or rotation measurements during an effort to trace the origin of the large missing fraction peculiar to nitrogen-rich diamonds, was found to have less than axial symmetry. Results of the quantitative analysis confirming the less than axial symmetry of the site are presented. In addition, results of molecular orbital calculations which indicate possible identifications of MuX within aggregated nitrogen centres are presented. The muon(ium) would be more deeply trapped within the nitrogen-related configurations than in the bond-centered configuration. These nitrogen-related traps are deeper for the muon than for muonium. Indeed, a T1 relaxation of the diamagnetic component is observed for the first time in this data.

Original languageEnglish
Pages (from-to)507-510
Number of pages4
JournalPhysica B: Condensed Matter
Publication statusPublished - 2000
Externally publishedYes
Event8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99) - Les Diablerets, Switzerland
Duration: 30 Aug 19993 Sept 1999


  • Diamond
  • Hydrogen
  • Muonium
  • Nitrogen

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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