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Muoniated radical states in the group 16 elements: Computational studies

机译:第16组元素的多重化自由基状态:计算研究

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Recent experimental studies on positive muon implantation in silicon, selenium, and tellurium have been interpreted on the basis that the primary paramagnetic species observed is XMu (X = S, Se, or Te), the muonium-substituted analog of the appropriate diatomic chalcogen monohydride radical. However, temperature-dependent signal visibility, broadening, and hyperfine shift effects remain puzzling. The interplay of degeneracy, spin-orbit coupling, and vibrational averaging in these species makes them computationally challenging despite their small size. In this work computational studies are carried out on all hydrogen isotopomers of the series OH, SH, SeH, and TeH. Several different methodological approaches are compared, and the effects of wavefunction symmetry, spin-orbit coupling, and zero-point vibrational corrections on the isotropic and anisotropic components of the hyperfine interaction are examined. Additionally, some models of the Mu site in rhombic sulfur are briefly considered.
机译:解释了最近对硅,硒和碲中的正向子注入的实验研究,其依据是观察到的主要顺磁物质是XMu(X = S,Se或Te),它是适当的双原子硫族元素一氢化物的mu取代类似物。激进。但是,与温度相关的信号可见性,展宽和超精细的移位效应仍然令人困惑。这些物种的简并性,自旋轨道耦合和振动平均的相互作用使它们尽管尺寸很小,但在计算上却具有挑战性。在这项工作中,对OH,SH,SeH和TeH系列的所有氢同位素异构体进行了计算研究。比较了几种不同的方法学方法,并检验了波函数对称性,自旋轨道耦合和零点振动校正对超精细相互作用的各向同性和各向异性分量的影响。此外,简要考虑了菱形硫中Mu位点的一些模型。

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