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Engineering
在极低的温度下角分辨光电子能谱
在极低的温度下角分辨光电子能谱
JoVE Journal
Engineering
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JoVE Journal Engineering
Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

在极低的温度下角分辨光电子能谱

Full Text
18,283 Views
08:53 min
October 9, 2012

DOI: 10.3791/50129-v

Sergey V. Borisenko1, Volodymyr B. Zabolotnyy1, Alexander A. Kordyuk1,2, Danil V. Evtushinsky1, Timur K. Kim1,3, Emanuela Carleschi4, Bryan P. Doyle4, Rosalba Fittipaldi5, Mario Cuoco5, Antonio Vecchione5, Helmut Berger6

1Institute for Solid State Research,IFW-Dresden, 2Institute of Metal Physics of National Academy of Sciences of Ukraine, 3Diamond Light Source LTD, 4Department of Physics,University of Johannesburg, 5CNR-SPIN, and Dipartimento di Fisica "E. R. Caianiello",Università di Salerno, 6Institute of Physics of Complex Matter,École Polytechnique Fédérale de Lausanne

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Please note that some of the translations on this page are AI generated. Click here for the English version.

这种方法的总体目标是,以确定低能量的电子在超低温下利用同步辐射角分辨光电子能谱结构的固体。

以下实验的总体目标是使用角度分辨光发射光谱或具有同步辐射的 arrp pez 确定超低温下固体的低能电子结构。在同步辐射设施中,连接到光束线的超高真空室中,研究材料的单晶被切割,作为第二步暴露出原子清洁的表面。样品冷却到 1 开尔文以下,这确保了最小的温度展宽和接近材料的基态。

接下来,将光发射强度记录为倾斜、角度和能量以及静态几何的函数。通过旋转样品,可以从获得接近坚固水平的固化表面图和分散体所需的大部分动量能量空间中收集信息,获得的结果表明,可以以前所未有的清晰度和分辨率确定复杂材料的低能电子结构。使用氦三冷冻机械手和基于同步加速器的 arrp e Angle 结果进行发射光谱是一种基于简单光电效应的技术,该技术在一个多世纪前就已经被发现和解释。

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物理68 化学 电子能带 能带结构的固体 超导材料 凝聚态物理 角分辨光电子能谱 角分辨光电子同步 成像

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