Title | Rich information on 2D materials revealed by optical second harmonic generation |
Authors | Ma, He Liang, Jing Hong, Hao Liu, Kehai Zou, Dingxin Wu, Muhong Liu, Kaihui |
Affiliation | Peking Univ, Acad Adv Interdisciplinary Studies, Collaborat Innovat Ctr Quantum Matter, State Key Lab Mesoscop Phys,Sch Phys, Beijing 100871, Peoples R China Huairou Natl Comprehens Sci Ctr, Beijing 100871, Peoples R China Chinese Acad Sci, Inst Phys, Songshan Lake Mat Lab, Guangzhou 523808, Guangdong, Peoples R China Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Dept Phys, Shenzhen 518000, Peoples R China Peking Univ, Int Ctr Quantum Mat, Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China Peking Univ, Frontiers Sci Ctr Nanooptoelect, Beijing 100871, Peoples R China |
Keywords | ELECTRON-HOLE SYMMETRY MECHANICAL-PROPERTIES NONLINEAR OPTICS STATES FERROMAGNETISM INTERFERENCE TRANSPORT CRYSTALS ENERGY |
Issue Date | 7-Dec-2020 |
Publisher | NANOSCALE |
Abstract | Two-dimensional (2D) materials have brought a spectacular revolution in fundamental research and industrial applications due to their unique physical properties of atomically thin thickness, strong light-matter interaction, unity valley polarization and enhanced many-body interactions. To fully explore their exotic physical properties and facilitate potential applications in electronics and optoelectronics, an effective and versatile characterization method is highly demanded. Among the many methods of characterization, optical second harmonic generation (SHG) has attracted broad attention because of its sensitivity, versatility and simplicity. The SHG technique is sufficiently sensitive at the atomic scale and therefore suitable for studies on 2D materials. More importantly, it has the capacity to acquire abundant information ranging from crystallographic, and electronic, to magnetic properties in various 2D materials due to its sensitivity to both spatial-inversion symmetry and time-reversal symmetry. These advantages accompanied by its characteristics of non-invasion and high throughput make SHG a powerful tool for 2D materials. This review summarizes recent experimental developments of SHG applications in 2D materials and also provides an outlook of potential prospects based on SHG. |
URI | http://hdl.handle.net/20.500.11897/599745 |
ISSN | 2040-3364 |
DOI | 10.1039/d0nr06051h |
Indexed | SCI(E) |
Appears in Collections: | 前沿交叉学科研究院 人工微结构和介观物理国家重点实验室 量子材料科学中心 |