Evolution of non-Kramers doublets in magnetic field in PrNi2Cd20 and PrPd2Cd20
Evolution of non-Kramers doublets in magnetic field in PrNi2Cd20 and PrPd2Cd20
复制标题
PrNi2Cd20 和 PrPd2Cd20 中非克莱默双峰在磁场中的演化
DOI：
10.1103/physrevb.104.205139
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发表时间：
2021
影响因子：
3.7
通讯作者：
Almasan, C. C.
中科院分区：
文献类型：
--
作者：
Konic, A. M.;Adhikari, R. B.;Kunwar, D. L.;Kirmani, A. A.;Breindel, A.;Sheng, R.;Maple, M. B.;Dzero, M.;Almasan, C. C.
基于镨的1-2-20笼化合物（通常是Ti，V，Nb，Ru，Rh，Ir;并且是Al，Zn或Cd）提供了另一个平台来研究从拓扑和磁序到非常规多极序和超导性的物质的非平凡电子态。在本文中，我们报告的电子热容的测量在两个Pr基1-2-20材料：和。我们发现P价组态的最低能量多重态是非Kramers二重态，第一激发三重态被假定为磁性的。通过分析基态和第一激发单重态之间的能量分裂对外部磁场的依赖性，我们发现，在对应于肖特基异常的热容中的最大值，不像，在较高的场值对外部磁场显示出明显的线性依赖性。这种效应与场致磁偶极矩之间的交换相互作用有关。
Praseodymium-based 1-2-20 cage compounds(is generally Ti, V, Nb, Ru, Rh, Ir; andis either Al, Zn, or Cd) provide yet another platform to study nontrivial electronic states of matter ranging from topological and magnetic orders to unconventional multipolar orders and superconductivity. In this paper, we report measurements of the electronic heat capacity in two Pr-based 1-2-20 materials:and. We find that the lowest-energy multiplet of the Prvalence configuration is anon-Kramers doublet and the first excited triplet is assumed to be a magnetic. By analyzing the dependence of the energy splitting between the ground and first excited singlet states on an external magnetic field, we found that the maximum in the heat capacity corresponding to the Schottky anomaly in, unlike, shows a pronounced linear dependence on an external magnetic field at higher field values. This effect is associated with the exchange interactions between the field-induced magnetic dipole moments.