Direct observation of the mass renormalization in SrVO3 by angle resolved photoemission spectroscopy.
Direct observation of the mass renormalization in SrVO3 by angle resolved photoemission spectroscopy.
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DOI：
10.1103/physrevlett.95.146404
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发表时间：
2005-03
影响因子：
8.6
通讯作者：
T. Yoshida;K. Tanaka;H. Yagi;A. Ino;H. Eisaki;A. Fujimori;Z. Shen
中科院分区：
文献类型：
--
作者：
T. Yoshida;K. Tanaka;H. Yagi;A. Ino;H. Eisaki;A. Fujimori;Z. Shen
利用角分辨光谱学直接观测了三维Mott-Hubbard系统SrVO3的能带色散和费米面。在费米能级附近观测到的谱权分布（E(F)）显示出由能带结构计算预测的圆柱形费米面。将实验结果与计算得到的表面电子结构进行比较，得出带色散反映了体电子结构的结论。在E(F)附近得到的有效电子质量的增强符合SrVO3的体热力学性质，因此符合SrVO3的正常费米-液体行为。
Band dispersions and Fermi surfaces of the three-dimensional Mott-Hubbard system SrVO3 are directly observed by angle-resolved photoemission spectroscopy. An observed spectral weight distribution near the Fermi level (E(F)) shows cylindrical Fermi surfaces as predicted by band-structure calculations. By comparing the experimental results with calculated surface electronic structures, we conclude that the obtained band dispersion reflects the bulk electronic structure. The enhanced effective electron mass obtained from the energy band near E(F) is consistent with the bulk thermodynamic properties and hence with the normal Fermi-liquid behavior of SrVO3.