Du Luojun, Huang Zhiheng, Zhang Jin, Ye Fangwei, Dai Qing, Deng Hui, Zhang Guangyu, Sun Zhipei
Beijing National Laboratory for Condensed Matter Physics, Key Laboratory for Nanoscale Physics and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, China.
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China.
Nat Mater. 2024 Sep;23(9):1179-1192. doi: 10.1038/s41563-024-01951-8. Epub 2024 Aug 30.
Nonlinear physics is one of the most important research fields in modern physics and materials science. It offers an unprecedented paradigm for exploring many fascinating physical phenomena and realizing diverse cutting-edge applications inconceivable in the framework of linear processes. Here we review the recent theoretical and experimental progress concerning the nonlinear physics of synthetic quantum moiré superlattices. We focus on the emerging nonlinear electronic, optical and optoelectronic properties of moiré superlattices, including but not limited to the nonlinear anomalous Hall effect, dynamically twistable harmonic generation, nonlinear optical chirality, ultralow-power-threshold optical solitons and spontaneous photogalvanic effect. We also present our perspectives on the future opportunities and challenges in this rapidly progressing field, and highlight the implications for advances in both fundamental physics and technological innovations.
非线性物理是现代物理和材料科学中最重要的研究领域之一。它为探索许多迷人的物理现象以及实现线性过程框架内难以想象的各种前沿应用提供了前所未有的范式。在此，我们回顾了关于合成量子莫尔超晶格非线性物理的近期理论和实验进展。我们聚焦于莫尔超晶格新出现的非线性电子、光学和光电特性，包括但不限于非线性反常霍尔效应、动态可扭曲谐波产生、非线性光学手性、超低功率阈值光学孤子以及自发光电流效应。我们还阐述了对这个快速发展领域未来机遇与挑战的看法，并强调其对基础物理进展和技术创新的意义。
