论文标题
四极相互作用在灯笼磁体的隧道动力学中的作用
The role of the quadrupolar interaction in the tunneling dynamics of lanthanide molecular magnets
论文作者
论文摘要
量子隧穿主导分子磁体中的低温磁化动力学，并呈现出强大的系统依赖性的特征。当前的讨论集中在Terbium（III）BIS（phtalocyanine）（[TBPC $ _2 $] $^{ - 1} $）复合物上，应作为灯笼的分子磁铁的原型情况。我们从数值上分析了非轴相互作用对内在隧道分裂幅度的影响，并表明通常的怀疑是横向配体场和Zeeman相互作用，无法解释实验观察到的动力学。然后，我们通过核四极相互作用提出一种可行的机制，否则\ textit {几乎}退化超精细状态。
Quantum tunneling dominates the low temperature magnetization dynamics in molecular magnets and presents features that are strongly system dependent. The current discussion is focused on the terbium(III) bis(phtalocyanine) ([TbPc$_2$]$^{-1}$) complex, that should serve as a prototypical case for lanthanide molecular magnets. We analyze numerically the effect of non-axial interactions on the magnitude of the intrinsic tunnel splitting and show that usual suspects like the transverse ligand field and Zeeman interaction fail to explain the experimentally observed dynamics. We then propose through the nuclear quadrupolar interaction a viable mechanism that mixes, otherwise \textit{almost} degenerate hyperfine states.
