Hyperfine structure in holmium ethylsulfate and holmium trichloride

Measurement by antilocalization of interactions between InAs surface electrons and magnetic surface species

“…The higher coupling to the environment for Ho 3+ may lead to an electric Stark splitting of levels into 2J+1 closely spaced levels, with a spacing sensitively dependent on the magnitude and symmetry of the environmental electric field. Hyperfine splitting should also be considered 27,[30][31][32] , particularly again for Ho 3+ due to the large value for its nuclear magnetic moment (in nuclear magnetons: 4.01 for Ho, compared to -0.21 for Sm and -0.11 for Gd averaged over their isotopes). A splitting of ∼ 1.5 meV has been quoted 30 , in range for thermal excitations in the present experiments although the precise value will depend on environmental factors.…”

The Hyperfine Splitting of Holmium Near an Energy Crossover in Yttrium Ethylsulphate

“…~N / Y E quoted above. That figure, incidentally, represents an order-of-magnitude improvement in accuracy over the best previous estimate of YN/YE for Ho:YES [7]. When compared with the corresponding figure of 152 f 10 for Ho (OH), [3] it also provides unambiguous evidence that the ratio is host-dependent.…”