包括多重散射效应的透射电子显微镜声子和磁振子角分辨电子能量损失和增益谱的动力学理论

IF 8.1 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2025-01-22 DOI:10.1103/physrevlett.134.036402

José Ángel Castellanos-Reyes, Paul M. Zeiger, Ján Rusz

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引用次数: 0

摘要

我们提出了一种计算透射电子显微镜中声子和磁振子激发的角分辨电子能量损失和增益谱的方法。分数散射强度是由辅助电子束波函数的温度依赖时间自相关导出的。该方法捕获单次和多次散射过程，以及动态衍射效应，同时保持计算效率和易于并行化。2025年由美国物理学会出版

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Dynamical Theory of Angle-Resolved Electron Energy Loss and Gain Spectroscopies of Phonons and Magnons in Transmission Electron Microscopy Including Multiple Scattering Effects

We present a method for computing angle-resolved electron energy loss and gain spectroscopies for phonon and magnon excitations in transmission electron microscopy. Fractional scattering intensities are derived from the temperature-dependent time autocorrelation of the auxiliary electron beam wave function. This method captures both single and multiple scattering processes, as well as dynamical diffraction effects, while remaining computationally efficient and easy to parallelize.

Published by the American Physical Society

2025

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks