Beta-Detected NQR in Zero Field with a Low Energy Beam of 8Li+

Salman, Z.; Kiefl, R. F.; Chow, K. H.; MacFarlane, W. A.; Arseneau, D. J.; Daviel, S.; Levy, C. D. P.; Maeno, Y.; Poutissou, R.

doi:10.1016/j.physb.2005.11.168

arXiv 2005-11-14 DOI 10.1016/j.physb.2005.11.168 0 مشاهدة

Beta-Detected NQR in Zero Field with a Low Energy Beam of 8Li+

Salman, Z. · Kiefl, R. F. · Chow, K. H. · MacFarlane, W. A. · Arseneau, D. J. · Daviel, S. · Levy, C. D. P. · Maeno, Y. · Poutissou, R.

Strongly Correlated Electrons Superconductivity

الأصل · EN

Beta-detected nuclear quadrupole resonances () at zero field are observed using a beam of low energy highly polarized radioactive 8Li+. The resonances were detected in SrTiO₃, Al₂O₃ and Sr₂RuO₄ single crystals by monitoring the beta-decay anisotropy as a function of a small audio frequency magnetic field. The resonances show clearly that 8Li 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 |± 2> ↔ |± 1> spin states, indicating a significant mixing between the |± m> quadrupolar split levels.

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