In situ x-ray absorption and photoelectron spectroscopy on epitaxial FexTe thin films with a wide range of Fe/Te compositions

被引：0
|
作者：
Liu, C. E. [1 ,2 ]
Wu, C. N. [1 ,3 ]
Falke, J. [1 ]
Chang, C. F. [1 ]
Kuo, C. -y. [1 ,2 ,4 ]
Yang, S. [4 ]
Juang, J. Y. [2 ]
Koz, C. [1 ]
Schwarz, U. [1 ]
Chen, C. T. [4 ]
Tjeng, L. H. [1 ]
Altendorf, S. G. [1 ]
机构：
[1] Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany
[2] Natl Yang Ming Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan
[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan
[4] Natl Synchrotron Radiat Res Ctr, 101 Hsin Ann Rd, Hsinchu 30076, Taiwan
来源：
PHYSICAL REVIEW B | 2024年 / 110卷 / 24期
关键词：
IRON; SUPERCONDUCTIVITY;
D O I：
10.1103/PhysRevB.110.245139
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
FexTe thin films were prepared on SrTiO3 (001) substrates by molecular beam epitaxy in a well-ordered epitaxial layer-by-layer fashion. The composition of the films was varied by adjusting the Te flux in a Te-limited growth regime. Changes in the electronic structure were systematically studied using in situ x-ray absorption spectroscopy at the Fe L 2,3 and Te M 4,5 edges and x-ray photoelectron spectroscopy of core levels and valence band. We found that FeTe with optimized composition (Fe/Te ratio approximate to 1) provides the sharpest spectral features, indicating that Fe1.00Te can be synthesized as a thin film, although it is not possible in bulk.
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页数：8
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