Identifying f -electron symmetries of UTe2 with O-edge resonant inelastic x-ray scattering
Identifying f -electron symmetries of UTe2 with O-edge resonant inelastic x-ray scattering
复制标题
利用 O 边共振非弹性 X 射线散射识别 UTe2 的 f 电子对称性
DOI：
10.1103/physrevb.106.l241111
复制
发表时间：
2022
影响因子：
3.7
通讯作者：
Wray, L. Andrew
中科院分区：
文献类型：
--
作者：
Liu, Shouzheng;Xu, Yishuai;Kotta, Erica C.;Miao, Lin;Ran, Sheng;Paglione, Johnpierre;Butch, Nicholas P.;Denlinger, Jonathan D.;Chuang, Yi-De;Wray, L. Andrew
最近在非磁性母态中发现的自旋三重态超导电性激发了人们对库珀配对的潜在机制的极大兴趣。对短程电磁关联的实验表征对于理解这些现象是至关重要的。在这里，我们使用共振非弹性X射线散射(RIXS)、X射线吸收光谱(XAS)和基于原子多重态的建模来阐明基于单重晶场状态的模型和基于预测原子Kramers二重态和更大巡回性的模型之间的激烈辩论。XAS和RIXS数据与具有弱传统磁关联的类价电子组态的预测非常一致，并为解释最近对电子结构和超导配对机制的研究提供了背景。
The recent discovery of spin-triplet superconductivity emerging from a nonmagnetic parent state inhas stimulated great interest in the underlying mechanism of Cooper pairing. Experimental characterization of short-range electronic and magnetic correlations is vital to understanding these phenomena. Here we use resonant inelastic x-ray scattering (RIXS), x-ray absorption spectroscopy (XAS), and atomic-multiplet-based modeling to shed light on the active debate between-based models with singlet crystal field states versus-based models that predict atomic Kramers doublets and much greateritinerancy. The XAS and RIXS data are found to agree strongly with predictions for a-like valence electron configuration with weak intradimer magnetic correlations, and provide a context for interpreting recent investigations of the electronic structure and superconducting pairing mechanism.