Experimental Elucidation: Microscopic Mechanism of Resonant X-Ray Scattering in Manganite Films
Experimental Elucidation: Microscopic Mechanism of Resonant X-Ray Scattering in Manganite Films
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实验阐明：锰酸盐薄膜中共振 X 射线散射的微观机制
DOI：
10.1143/jpsj.72.1006
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发表时间：
2003
影响因子：
1.7
通讯作者：
Y. Tokura
中科院分区：
文献类型：
--
作者：
H. Ohsumi;Y. Murakami;T. Kiyama;H. Nakao;M. Kubota;Y. Wakabayashi;Y. Konishi;M. Izumi;M. Kawasaki;Y. Tokura
用共振X射线散射实验研究了在三种不同的钙钛矿衬底上生长的锰氧化物La0.5Sr0.5MnO3薄膜，薄膜具有Mn 3d轨道的强迫铁型轨道有序.利用干涉技术，我们成功地观察到了具有铁型轨道有序的系统的共振X射线散射信号，并揭示了Mn 4p带的能量方案。对于受迫铁型轨道有序体系，本文的结果表明，共振X射线散射信号来源于MnO 6八面体的Jahn-Teller畸变引起的能带结构效应，而不是3d和4p电子之间的库仑相互作用.
Resonant X-ray scattering experiments have been performed on perovskite manganite La 0.5 Sr 0.5 MnO 3 thin films, which are grown on three distinct perovskite substrates with a coherent epitaxial strain and have a forced ferro -type orbital ordering of Mn 3 d orbitals. Using an interference technique, we have successfully observed the resonant X-ray scattering signal from the system having the ferro -type orbital ordering and also revealed the energy scheme of Mn 4 p bands. For the forced ferro -type orbital ordering system, the present results evidence that the resonant X-ray scattering signal originates from the band structure effect due to the Jahn–Teller distortion of a MnO 6 octahedron, and not from the Coulomb interaction between 3 d and 4 p electrons.