UV & visible plasmonic metamaterials made of topological insulator

• Main Authors: Ou, Jun-Yu, So, Jin-Kyu, Adamo, Giorgio, Sulaev, Azat, Wang, Lan, Zheludev, Nikolay I.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Conference or Workshop Item
• Language: English
• Published: 2018
• Subjects: Surface Plasmons; Metamaterials; DRNTU::Science::Physics
• Online Access: https://hdl.handle.net/10356/87614; http://hdl.handle.net/10220/46801
• Institution: Nanyang Technological University

Plasmonic resonances are observed in metamaterials made of a topological insulator, Bi1.5Sb0.5Te1.8Se1.2, at the UV and visible frequencies due to the material’s interband transition and nontrivial surface conducting state.