Theoretical study of optical properties of topological phases

拓扑相光学性质的理论研究

• 批准号: 24840047
• 负责人: MORIMOTO Takahiro
• 金额: $ 1.58万
• 依托单位: Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-08-31 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24840047/
• 关键词: トポロジカル絶縁体; トポロジカル超伝導体; アンダーソン局在; ワイル半金属; グラフェン; 量子ホール効果; THｚ光

(1) We have studied optical properties of multilayer graphenes. We have proposed that the trigonal warping effect of the band structure can be experimentally observed by measuring Faraday rotations. We also proposed a novel valley Hall state of trilayer graphene in the presence of gate electric fields.(2) We have applied a classification method of topological phases by Clifford algebras and classified topological crystalline insulators in the presence of reflection symmetries. We also studied stability of surface states of weak topological insulators using Clifford algebras.

(1)我们研究了多层石墨烯的光学性质。我们提出了通过测量法拉第旋转可以在实验上观察到带结构的三角弯曲效应。我们还提出了一种新的三层石墨烯在栅极电场的存在下的谷霍尔态。(2)我们应用Clifford代数的拓扑相分类方法，在存在反射对称性的情况下对拓扑晶体绝缘体进行了分类。我们还利用Clifford代数研究了弱拓扑绝缘体表面态的稳定性。

项目成果

Vortex and edge states in superconducting multilayer graphene

超导多层石墨烯中的涡旋和边缘态

• 发表时间: 2013
• 作者: Takahiro Morimoto;and Akira Furusaki
• 通讯作者: and Akira Furusaki

Two-parameter flow of σxx(ω)-σxy(ω) for the graphene quantum Hall system in the ac regime

交流态石墨烯量子霍尔系统的 σxx(ω)-σxy(ω) 的二参数流

• DOI: 10.1103/physrevb.85.165445
• 发表时间: 2012
• 期刊: Phys. Rev. B
• 作者: Haze;K.;et al.;Takahiro Morimoto
• 通讯作者: Takahiro Morimoto

Stability of surface states of general weak Z2 topological insulators and superconductors

一般弱Z2拓扑绝缘体和超导体表面态的稳定性

• 发表时间: 2014
• 作者: Takahiro Morimoto;and Akira Furusaki
• 通讯作者: and Akira Furusaki

Topological classification with additional symmetries from Clifford algebras

• DOI: 10.1103/physrevb.88.125129
• 发表时间: 2013-09-20
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Morimoto, Takahiro;Furusaki, Akira
• 通讯作者: Furusaki, Akira

Theory of optical responses in the bilayer and trilayer graphene in the quantum Hall regime

量子霍尔体系中双层和三层石墨烯的光学响应理论

• 发表时间: 2013
• 作者: Takahiro Morimoto;Mikito Koshino;and Hideo Aoki
• 通讯作者: and Hideo Aoki