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arXiv 2302.06338cond-mat.mtrl-scicond-mat.mes-hall
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通过光学反馈抑制和放大过渡金属二硫属化物中的声子边带

Suppression and amplification of phonon sidebands in transition metal dichalcogenides by optical feedback

Thomas Tenzler, Andreas Knorr, Manuel Katzer

AI总结:

本文研究通过光学反馈调控TMDCs中非马尔可夫激子-声子散射,结合微观布洛赫方程与宏观波动方程自洽求解,提出增强或抑制MoSe₂声子边带的两种方案。

摘要:

过渡金属二硫属化物(TMDCs)兼具强光-物质相互作用和强库仑相互作用,从而形成可被光激发的激子。通过辐射反馈控制,可以应用一种调控线宽的机制,从而改变光学跃迁光谱。在此,我们将这些研究扩展到多种几何构型下TMDCs的吸收光谱,并考虑非马尔可夫激子-声子散射贡献。我们的方法基于微观布洛赫方程的自洽求解和波动方程的宏观求解。我们讨论了嵌入SiO$_2$中的MoSe$_2$声子边带的形成,以及两种在光谱中增强或抑制声子边带的实验设置。

英文摘要:

Transition metal dichalcogenides (TMDCs) combine both strong light-matter-interaction and strong Coulomb-interaction for the formation of optically excitable excitons. Through radiative feedback control, a mechanism to control the linewidth can be applied, which modifies optical transition spectra. Here, we extend these investigations to the absorption spectra of TMDCs in a variety of geometries with respect to non-Markovian exciton-phonon-scattering contributions. Our approach is based on the self consistent solution of the microscopic Bloch equations and the macroscopic solution of the wave equation. We discuss the formation of a phonon sideband for MoSe$_2$ embedded in SiO$_2$, and two setups for enhancing or suppressing the phonon sideband in the spectrum.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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