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.

引用

页数：8

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