The electronic structure parameter (W_M) of the nuclear magnetic quadrupole moment (MQM) interaction in numerous open-shell metal monofluorides (viz., MgF, CaF, SrF, BaF, RaF, and PbF) is computed in the fully relativistic coupled-cluster framework. The electron-correlation effects are found to be very important for the precise calculation of W_M in the studied molecular systems. The molecular MQM interaction parameter scales nearly as Z² in the alkaline earth metal monofluorides, where Z is the nuclear charge of metal. Our study identifies ²²³RaF as a good candidate for the experimental search of the nuclear MQM, which can help unravel the physics beyond the standard model in the hadron sector of matter.

中文翻译：

---

一氟化金属中核磁四极矩相互作用的电子结构参数

在完全相对论耦合的条件下，计算了许多开壳金属单氟化物（即MgF，CaF，SrF，BaF，RaF和PbF）中核磁四极矩（MQM）相互作用的电子结构参数（W _M）。集群框架。发现电子相关效应对于所研究分子系统中W _M的精确计算非常重要。分子MQM相互作用参数在碱土金属单氟化物中几乎缩放为Z ²，其中Z是金属的核电荷。我们的研究确定²²³ RaF是进行核MQM的实验搜索的良好候选者，这可以帮助阐明强子物质领域中超出标准模型的物理学。