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DOE OSTI · 1390307

Visualizing dispersive features in 2D image via minimum gradient method

He, Yu·Wang, Yan·Shen, Zhi -Xun
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Abstract

Here, we developed a minimum gradient based method to track ridge features in a 2D image plot, which is a typical data representation in many momentum resolved spectroscopy experiments. Through both analytic formulation and numerical simulation, we compare this new method with existing DC (distribution curve) based and higher order derivative based analyses. We find that the new method has good noise resilience and enhanced contrast especially for weak intensity features and meanwhile preserves the quantitative local maxima information from the raw image. An algorithm is proposed to extract 1D ridge dispersion from the 2D image plot, whose quantitative application to angle-resolved photoemission spectroscopy measurements on high temperature superconductors is demonstrated.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS97 MATHEMATICS AND COMPUTING

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He, Yu, Wang, Yan, Shen, Zhi -Xun. 2017-07-24. Visualizing dispersive features in 2D image via minimum gradient method. https://doi.org/10.1063/1.4993919

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