文章基本信息

标题：Spectroscopic characterization of electronic structures of ultra-thin single crystal La _0.7Sr _0.3MnO ₃
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作者：Chun-Chien Chiu ; Yao-Wen Chang ; Yu-Cheng Shao 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2021
卷号：11
DOI：10.1038/s41598-021-84598-8
语种：English
出版社：Springer Nature
摘要：We have successfully fabricated high quality single crystalline La 0.7Sr 0.3MnO 3 (LSMO) film in the freestanding form that can be transferred onto silicon wafer and copper mesh support. Using soft x-ray absorption (XAS) and resonant inelastic x-ray scattering (RIXS) spectroscopy in transmission and reflection geometries, we demonstrate that the x-ray emission from Mn 3 s-2 p core-to-core transition (3 sPFY) seen in the RIXS maps can represent the bulk-like absorption signal with minimal self-absorption effect around the Mn L 3-edge. Similar measurements were also performed on a reference LSMO film grown on the SrTiO 3 substrate and the agreement between measurements substantiates the claim that the bulk electronic structures can be preserved even after the freestanding treatment process. The 3 sPFY spectrum obtained from analyzing the RIXS maps offers a powerful way to probe the bulk electronic structures in thin films and heterostructures when recording the XAS spectra in the transmission mode is not available.