Intermultiplet transitions in filled skutterudite SmFe4P12

International Conference on Strongly Correlated Electron Systems 2014

Konno, S.^1 ; Suzuki, A.^1 ; Nihei, K.^1 ; Kuwahara, K.^1 ; Kawana, D.^2 ; Yokoo, T.^3 ; Itoh, S.^3

Institute of Applied Beam Science, Ibaraki University, Ibaraki, Mito

310-8512, Japan^1

Institute for Solid State Physics, University of Tokyo, Tokai

319-1106, Japan^2

Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba

305-0801, Japan^3

关键词: Filled-skutterudite;    High-energy neutron;    Inelastic neutrons;    Inelastic structure;    Intermultiplet transition;    Inverse magnetic susceptibility;    Neutron scattering experiments;    Scattering vectors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012029/pdf
DOI  :  10.1088/1742-6596/592/1/012029

来源: IOP

【 摘 要 】

The intermultiplet transitions in filled skutterudite SmFe4P12are studied by magnetization and time-of-flight inelastic neutron scattering experiments. In neutron scattering experiments by using high energy neutrons for reducing huge neutron absorption of natural Sm, a small inelastic peak has been observed around ∼80 meV at low temperature. The scattering vector dependence of intensity of this peak agrees with the theoretical inelastic structure factor for the intermultiplet transition from the ground J 5/2 multiplet to the excited J 7/2 multiplet in Sm3+ion. Interestingly, the energy splitting is much smaller than the free Sm3+ion value. This is also comparable with that estimated by the inverse magnetic susceptibility. This large reduction of the energy splitting might be due to the strong c-f mixing in SmFe4P12.