Data files for "Identifying and quantifying Su-Schrieffer-Heeger-like interactions with RIXS"

Data files for D. Banerjee et al., Identifying and quantifying {S}u-{S}chrieffer-{H}eeger-like interactions with RIXS. Physical Review Letters (2025). Abstract: Su-Schrieffer-Heeger (SSH)-like electron-phonon (e-ph) interactions can drive the formation of light (bi)polarons and several novel states of matter. It is, therefore, prudent to develop experimental protocols for identifying such couplings in real materials and quantifying their strength. Here, we investigate how resonant inelastic x-ray scattering (RIXS) probes e-ph interactions in the one-dimensional half-filled Hubbard-SSH model with onsite phonons. Using the density matrix renormalization group method, we compute the full RIXS response and find that the lattice excitations generated during the scattering process inevitably couple to the system's charge and magnetic sectors, resulting in combined multi-particle excitations that cannot be easily disentangled from one another. While this aspect complicates the interpretation of RIXS experiments, we outline how it can be leveraged to identify and quantify SSH-like interactions in quantum materials. DOI: https://doi.org/10.1103/mr3k-w171 Preprint: https://arxiv.org/abs/2412.15981D. Banerjee等人的数据集文件，对应论文《利用共振非弹性X射线散射（Resonant Inelastic X-ray Scattering, RIXS）识别并量化类Su-Schrieffer-Heeger相互作用》，发表于《物理评论快报》（2025年）。 摘要：类Su-Schrieffer-Heeger（Su-Schrieffer-Heeger, SSH）电子-声子（electron-phonon, e-ph）相互作用可驱动轻质极化子、双极化子及多种新奇物态的形成。因此，开发实验方案以在真实材料中识别此类耦合并量化其强度，是一项必要的研究工作。本文针对带有在位声子的一维半满哈伯德-SSH模型，探究共振非弹性X射线散射（RIXS）对体系中电子-声子相互作用的探测机制。借助密度矩阵重整化群（density matrix renormalization group, DMRG）方法，我们计算了完整的RIXS响应，发现散射过程中产生的晶格激发不可避免地与体系的电荷和磁学自由度耦合，形成难以直接区分的复合多粒子激发。尽管该现象会增加RIXS实验的解析难度，但我们仍阐述了如何利用该效应实现量子材料中类SSH相互作用的识别与量化。 DOI: https://doi.org/10.1103/mr3k-w171 预印本: https://arxiv.org/abs/2412.15981