arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1004.2800cond-mat.mes-hallcond-mat.mtrl-scicond-mat.other
收藏

双层Bernal石墨烯的磁光选择规则

Magneto-optical Selection Rules in Bilayer Bernal Graphene

Yen-Hung Ho, Yu-Huang Chiu, De-Hone Lin, Chen-Peng Chang, Ming-Fa Lin

摘要:

采用紧束缚模型研究了双层Bernal石墨烯的低频磁光性质,其中考虑了四种最重要的层间相互作用。由于波函数的主要特征得到了很好的描述,因此根据波函数的特征,可以将朗道能级分为两组。这些朗道能级导致在光学吸收光谱中的四类吸收峰。这些吸收峰具有复杂的光学选择规律,这些规律可以用波函数的特征得到合理的解释。此外,还得到了双峰结构、规则的频率依赖吸收率和复场依赖频率。吸收峰的主要特征与单层石墨烯中的吸收峰非常不同,并且其起源于层间相互作用。

英文摘要:

The low-frequency magneto-optical properties of bilayer Bernal graphene are studied by the tight-binding model with four most important interlayer interactions taken into account. Since the main features of the wave functions are well depicted, the Landau levels can be divided into two groups based on the characteristics of the wave functions. These Landau levels lead to four categories of absorption peaks in the optical absorption spectra. Such absorption peaks own complex optical selection rules and these rules can be reasonably explained by the characteristics of the wave functions. In addition, twin-peak structures, regular frequency-dependent absorption rates and complex field-dependent frequencies are also obtained in this work. The main features of the absorption peaks are very different from those in monolayer graphene and have their origin in the interlayer interactions.

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。

↑