Abstract
Owing to the staggered sequence of hexagonal layers in the rhombohedral crystal structure of Bi two different interstitial sites are in principle available to the μ+. It is found that below 10 K the μ+ is localized at one of these sites while above 80 K up to 110 K the μ+ is localized at the other site. In both instances a latticecontraction around the μ+ is observed, amounting to a reduction of 12% at 8 K and 7% at 100 K in the nearest Bi μ+ distances. At both sites the second moments reveal strong quadrupole interaction effects, which dominate at 8 K in fields up to 0.746 T but which are slightly quenched at this field strength at 100 K.
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Baumann, D., Gygax, F.N., Lippelt, E. et al. Lattice relaxation and μ+ sites in rhombohedral bismuthsites in rhombohedral bismuth. Hyperfine Interact 31, 53–59 (1986). https://doi.org/10.1007/BF02401539
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DOI: https://doi.org/10.1007/BF02401539