Resonant soft x-ray scattering studies of electronic orders in transition metal oxides and related heterostructures.

过渡金属氧化物和相关异质结构中电子序的共振软 X 射线散射研究。

• 批准号: 213948008
• 负责人: Dr. Jorge-Enrique Hamann Borrero
• 金额: --
• 依托单位: Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (IFW) e.V.
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/213948008?language=en
• 关键词: Resonant; soft; ray; scattering; studies

The aim of the present application is the experimental investigation of electronic properties of films and heterostructures by means of novel resonant scattering experiments. The focus here are the electronic properties of manganese oxides and their modification at the interfaces in artificial heterostructures. The experimental methodology is based on the resonant elastic scattering of soft X-rays. The central aims of the planned scattering experiments are to clarify the following: (i) the impact of epitaxial and in-situ induced structural strain on the electronic ordering in doped manganites, (ii) the interplay of superconductivity and ferromagnetism at interfaces in YBaCu2O7-d/La(1-x)Ca(x)MnO3 heterostructures, and (iii) the antiferromagnetic interlayer coupling in La(1-x)Sr(x)MnO3/SrRuO3 heterostructures.In the course of this study, newly developed approaches to the analysis of resonant x-ray reflectivity will be applied. These approaches have been developed during the first funding period and now enable to extract very precisely the electronic properties of buried interfaces with unknown optical properties. The accurate understanding of the effects mentioned above is not only of great interest for fundamental research, but is essential for possible technological applications.

本应用的目的是通过新的共振散射实验对薄膜和异质结的电学性质进行实验研究。这里的重点是锰氧化物的电子性质及其在人工异质结构中的界面修饰。实验方法是基于软X射线的共振弹性散射。计划中的散射实验的主要目的是阐明：(I)外延和原位诱导的结构应变对掺杂锰氧化物电子有序的影响，(Ii)YBaCu2O7-d/La(1-x)Ca(X)MnO_3异质结界面超导电性和铁磁性的相互作用，以及(Iii)La(1-x)Sr(X)MnO_3/SrRuO_3异质结中的反铁磁层间耦合。这些方法是在第一个资助期内开发的，现在能够非常精确地提取具有未知光学性质的埋藏界面的电子性质。对上述效应的准确理解不仅对基础研究具有重要意义，而且对可能的技术应用也是至关重要的。

项目成果

Chemical vapor transport and characterization of MnBi2Se4

MnBi2Se4 的化学气相传输和表征

• DOI: 10.1016/j.jcrysgro.2016.11.090
• 发表时间: 2017
• 期刊: Journal of Crystal Growth
• 影响因子: 1.8
• 作者: C. Nowka;M. Gellesch;J. E. Hamann- Borrero;S. Partzsch;C. Wuttke;F. Steckel;C. Hess;A.U.B. Wolter;L. T. Corredor-Bohorquez;B. Buchner;S. Hampel
• 通讯作者: S. Hampel

Dynamical Effects in Resonant X-Ray Diffraction.

共振 X 射线衍射的动力学效应

• DOI: 10.1103/physrevlett.117.115501
• 发表时间: 2016
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: S. Macke;J. E. Hamann-Borrero;R. J. Green;B. Keimer;G. A. Sawatzky;M. W. Haverkort
• 通讯作者: M. W. Haverkort

Electronic depth profiles with atomic layer resolution from resonant soft x-ray reflectivity

通过共振软 X 射线反射率获得具有原子层分辨率的电子深度剖面

• DOI: 10.1088/1367-2630/17/8/083046
• 发表时间: 2015
• 期刊: New Journal of Physics
• 影响因子: 3.3
• 作者: M. Zwiebler;J. E. Hamann-Borrero;M. Vafaee;P. Komissinskiy;S. Macke;R. Sutarto;B. Buchner;G. A. Sawatzky;L. Alff;J. Geck
• 通讯作者: J. Geck

Valence-state reflectometry of complex oxide heterointerfaces

• DOI: 10.1038/npjquantmats.2016.13
• 发表时间: 2016-09-16
• 期刊: NPJ QUANTUM MATERIALS
• 影响因子: 5.7
• 作者: Hamann-Borrero, Jorge E.;Macke, Sebastian;Hinkov, Vladimir
• 通讯作者: Hinkov, Vladimir