超越材料中光-物质相互作用的电偶极子处理：体硅中非偶极子谐波的产生

IF 9 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2025-05-13 DOI:10.1103/physrevlett.134.196902

Simon Vendelbo Bylling Jensen, Nicolas Tancogne-Dejean, Angel Rubio, Lars Bojer Madsen

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引用次数: 0

摘要

需要一个超越电偶极子的光物质理论来描述新兴的x射线和太赫兹应用，以表征和控制量子材料，但由于非偶极子晶格非周期术语阻碍了布洛赫定理的使用，因此无法实现。为了避免这种情况，我们推导了一种形式，在保持晶格平移对称性的同时，捕获了强电磁场中占主导地位的非偶极子效应。我们的方法实现了硅中非微扰谐波产生的第一个精确的非偶极子第一性原理微观模拟。我们揭示了产生微扰偶极子偶序谐波的横向电流，并展示了在激光损伤阈值附近非偶极子高谐波产生的起始点。2025年由美国物理学会出版

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Beyond Electric-Dipole Treatment of Light-Matter Interactions in Materials: Nondipole Harmonic Generation in Bulk Si

A beyond electric-dipole light-matter theory is needed to describe emerging x-ray and THz applications for characterization and control of quantum materials but inaccessible as nondipole lattice-aperiodic terms impede on the use of Bloch’s theorem. To circumvent this, we derive a formalism that captures dominant nondipole effects in intense electromagnetic fields while conserving lattice translational symmetry. Our approach enables the first accurate nondipole first-principles microscopic simulation of nonperturbative harmonic generation in Si. We reveal nondipole-induced transverse currents generating perturbative even-ordered harmonics and display the onset of nondipole high harmonic generation near the laser damage threshold.

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