Electron-nuclear interactions as a test of crystal field parameters for low-symmetry systems: Zeeman hyperfine spectroscopy of Ho3+ -doped Y2SiO

Prediction of optical polarization and high-field hyperfine structure via a parametrized crystal-field model for low-symmetry centers in Er3+ -doped Y2SiOJobbitt1, Wells2, Reid3 et al. 2021Phys. Rev. BSelf Cite11150View full textAdd to dashboardCite

“…Recently, crystal-field analyses have been performed for the C 1 symmetry centers in Ce 3+ , Er 3+ and Yb 3+ doped Y 2 SiO 5 [16][17][18][19]; with further analyses under way for Y 2 SiO 5 doped with Nd 3+ , Sm 3+ and Ho 3+ [20][21][22].…”

Complete crystal field calculation of Zeeman-hyperfine splittings in europium

“…In true doublets such as the high symmetry (C 4v ) Pr 3+ :CaF 2 ground state [8], there is again a large first order magnetic dipole term. In pseudo-doublet ground states (two singlets split by only a few cm −1 ) such as those observed in Ho 3+ [7,15,21] or Tb 3+ [22,23], it is the second order magnetic dipole interaction, commonly referred to as the pseudo-quadrupole (see Section III B), that has the largest contribution. Provided the crystal field splitting of the pseudo-doublet ground state is accurately modeled, satisfactory fits to the hyperfine splittings of transitions can be achieved by calculating the magnetic dipole interaction, with the 4f quadrupole having only a minor effect on the splittings [15].…”

“…Provided the crystal field splitting of the pseudo-doublet ground state is accurately modeled, satisfactory fits to the hyperfine splittings of transitions can be achieved by calculating the magnetic dipole interaction, with the 4f quadrupole having only a minor effect on the splittings [15]. Sufficiently accurate splittings of these pseudodoublets can be achieved by the inclusion of the twoelectron correlation crystal field parameters [7], or by manual manipulation of the levels [21]. Hyperfine structure of non-Kramers doublets and pseudo-doublets has been successfully calculated in several hosts, including CaF 2 [7,8,15,23], SrF 2 [8,23], LiYF 4 [20,22], KY 3 F 10 [18], CaWO 4 [19], YAl 3 (BO 3 ) 4 [16], YPO 4 [17], and both sites of Y 2 SiO 5 [21].…”

“…An alternative is to use a full crystal field model for the whole 4f configuration of the rare earth ion, including interactions that generate hyperfine structure. These types of models have been successfully applied for several different hosts doped with Kramers and non-Kramers rare earth ions, including Pr 3+ [5,[7][8][9][10], Er 3+ [11][12][13][14], Ho 3+ [7,[15][16][17][18][19][20][21], Tb 3+ [22,23], and Tm 3+ [4,10]. However, a complete crystal field calculation of Eu 3+ Zeemanhyperfine structure has not been demonstrated.…”

Измерения зеемановско-сверхтонкого псевдовырожденного квадруплета в CaF-=SUB=-2-=/SUB=-:Ho-=SUP=-3+-=/SUP=-

“…Такие переходы обычно связаны с антипересечениями (несостоявшимися пересечениями) сверхтонких подуровней. Отметим, недавно мы продемонстрировали, что можно выполнить расчеты по теории кристаллического поля для позиций с точечной группой симметрии C 1 в Y 2 SiO 5 [5] и использовать их предсказательную способность для интерпретации спектров со сверхтонкой структурой [6].…”