First-principles method justifying the Dieke diagram and beyond
First-principles method justifying the Dieke diagram and beyond
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第一性原理方法证明 Dieke 图及其他图的合理性
DOI:
10.1103/physrevresearch.5.013111
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发表时间:
2023
影响因子:
4.2
通讯作者:
Sato Kazunori
中科院分区:
文献类型:
--
作者:
Suzuki Katsuhiro;Kotani Takao;Sato Kazunori
We present a method to determine the model Hamiltonians to treat rare-earth multiplets in solids from the results of the quasiparticle self-consistentGW(QSGW) method. We apply the method to trivalent Eu compounds, EuN, and Eu-doped GaN after examining free rare-earth ions. We solve the model Hamiltonian by the exact diagonalization. Our results justify applying the Dieke diagram to ions in solid, while its limitation is clarified. In particular, we show that the crystal fields cause sizable breaking of the Russell-Saunders coupling.
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