Three-dimensional bulk electronic structure of the Kondo lattice CeIn3 revealed by photoemission.

Three-dimensional bulk electronic structure of the Kondo lattice CeIn3 revealed by photoemission.
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光电发射揭示近藤晶格 CeIn3 的三维体电子结构

DOI:
10.1038/srep33613
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发表时间:
2016-09-19
期刊:
影响因子:
4.6
通讯作者:
Lai X
Lai X
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhang Y;Lu H;Zhu X;Tan S;Liu Q;Chen Q;Feng W;Xie D;Luo L;Liu Y;Song H;Zhang Z;Lai X

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我们显示的三维电子结构的近藤晶格CeIn 3使用软X射线角分辨光电子能谱在顺磁状态。首次用光电发射直接观察到CeIn_3费米面的三维拓扑结构。费米面有一个以Γ-Z线为中心的复杂空穴袋和一个以布里渊区R点为中心的椭圆形电子袋。极化和光子能量依赖的光电发射结果都表明CeIn 3中4f电子的近局域性质,与密度泛函理论和单格位动力学平均场理论相结合的理论预测相一致。这些结果表明,CeMIn 5化合物的母体材料CeIn 3的电子比层状CeMIn 5化合物更接近局域描述。
We show the three-dimensional electronic structure of the Kondo lattice CeIn3using soft x-ray angle resolved photoemission spectroscopy in the paramagnetic state. For the first time, we have directly observed the three-dimensional topology of the Fermi surface of CeIn3by photoemission. The Fermi surface has a complicated hole pocket centred at the Γ-Z line and an elliptical electron pocket centred at the R point of the Brillouin zone. Polarization and photon-energy dependent photoemission results both indicate the nearly localized nature of the 4felectrons in CeIn3, consistent with the theoretical prediction by means of the combination of density functional theory and single-site dynamical mean-field theory. Those results illustrate that thefelectrons of CeIn3, which is the parent material of CeMIn5compounds, are closer to the localized description than the layered CeMIn5compounds.
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