Semiconductor Topological Photonics Based on Honeycomb Structure with Kekulé-type Deformation
Event details
| Date | 05.03.2024 |
| Hour | 14:00 › 15:00 |
| Speaker |
Prof. Hu Xiao Research Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) |
| Location | |
| Category | Conferences - Seminars |
| Event Language | English |
Abstract
It was shown that deforming the honeycomb structure in a semiconductor photonic crystal in ways respecting C6v symmetry, one opens gaps at G point in the Dirac-type dispersion accompanied by a p-d band inversion, yielding a photonic analogue of quantum spin Hall effect [1]. In this talk, after a brief introduction on the basic notions of topology physics [2], I will discuss on recent research frontiers of semiconductor topological photonics [3-6] and related fields such as phononic and acoustic systems.
References
[1] L.-H. Wu and X. Hu, Phys. Rev. Lett. vol. 114, 223901 (2015).
[2] H. Weng, R. Yu, X. Hu, X. Dai and Z. Fang, Adv. Phys. vol. 64, 227 (2015).
[3] Y.-T. Yang, X. Hu and Z.-H. Hang et al., Phys. Rev. Lett. vol. 120, 217401 (2018).
[4] Y. Li, Z. Guo, H. Chen and X. Hu et al., Nat. Cummun. vol. 9, 4598 (2018).
[5] Z.-K. Shao and X. Hu et al., Nat. Nanotechnol. vol. 15, 67 (2020).
[6] X.-X. Wang, Z. Guo, H. Chen and X. Hu et al., Nat. Cummun. vol. 14, 3040 (2023).
It was shown that deforming the honeycomb structure in a semiconductor photonic crystal in ways respecting C6v symmetry, one opens gaps at G point in the Dirac-type dispersion accompanied by a p-d band inversion, yielding a photonic analogue of quantum spin Hall effect [1]. In this talk, after a brief introduction on the basic notions of topology physics [2], I will discuss on recent research frontiers of semiconductor topological photonics [3-6] and related fields such as phononic and acoustic systems.
References
[1] L.-H. Wu and X. Hu, Phys. Rev. Lett. vol. 114, 223901 (2015).
[2] H. Weng, R. Yu, X. Hu, X. Dai and Z. Fang, Adv. Phys. vol. 64, 227 (2015).
[3] Y.-T. Yang, X. Hu and Z.-H. Hang et al., Phys. Rev. Lett. vol. 120, 217401 (2018).
[4] Y. Li, Z. Guo, H. Chen and X. Hu et al., Nat. Cummun. vol. 9, 4598 (2018).
[5] Z.-K. Shao and X. Hu et al., Nat. Nanotechnol. vol. 15, 67 (2020).
[6] X.-X. Wang, Z. Guo, H. Chen and X. Hu et al., Nat. Cummun. vol. 14, 3040 (2023).
Practical information
- Informed public
- Free
- This event is internal
Organizer
- Prof. Tobias J. Kippenberg
Contact
- Jiahe Pan, [email protected]