Beta-detected NQR in zero field with a low energy beam of Li-8(+)

Conference item

Beta-detected nuclear quadrupole resonances (beta-NQR) in zero field are observed using a beam of low energy highly polarized radioactive Li-8(+). The resonances were detected in SrTiO3, Al2O3 and Sr2RO4 single crystals by monitoring the beta-decay anisotropy as a function of a small audio frequency magnetic field. The resonances show clearly that Li-8(+) occupies one site with non-cubic symmetry in SrTiO3, two in Al2O3 and three sites in Sr2RuO4. The resonance amplitude and width are surprisingly large compared to the values expected from transitions between the vertical bar +/- 2) <-> vertical bar +/- 1) spin states, indicating a significant mixing between the vertical bar +/- m) quadrupolar split levels. (c) 2006 Elsevier B.V. All rights reserved.

Authors: Salman, Z; Kiefl, R; Chow, K; MacFarlane, W; Kreitman, SR

• Publication status: Published
• Journal: PHYSICA B-CONDENSED MATTER
• Volume: 374
• Pages: 468-471
• Publication date: 2006-03-31
• Event title: 10th International Conference on Muon Spin Rotation, Relaxation and Resonance
• DOI: 10.1016/j.physb.2005.11.168
• ISSN: 0921-4526
• Keywords: zero field; beta-NMR; beta-NQR; quadrupole resonance