Near-field strong plasmonic resonances in Bi1.5Sb0.5Te1.8Se1.2 topological insulator film

Topological insulators are a new class of quantum materials with metallic (edge) surface states and insulating bulk states. They exhibit various novel electronic and optical properties that make them highly promising electronic, spintronic, and optoelectronic materials. Our report confirms that the...

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Bibliographic Details
Published in:European physical journal plus 2022-02, Vol.137 (2), p.206, Article 206
Main Authors: Guo, Baoshan, Yao, Huan, Zhan, Ningwei
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Atomic
Complex Systems
Condensed Matter Physics
Data processing
Electromagnetic fields
Electromagnetic radiation
Lasers
Mathematical and Computational Physics
Molecular
Optical and Plasma Physics
Optical properties
Optoelectronic devices
Physics
Physics and Astronomy
Plasmonics
Regular Article
Resonance
Simulation
Theoretical
Topological insulators
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Summary:Topological insulators are a new class of quantum materials with metallic (edge) surface states and insulating bulk states. They exhibit various novel electronic and optical properties that make them highly promising electronic, spintronic, and optoelectronic materials. Our report confirms that the topological insulator Bi 1.5 Sb 0.5 Te 1.8 Se 1.2 (BSTS) is also an effective plasmonic material in the visible and near-infrared range. A BSTS film can effectively control transmission and reflection characteristics by changing the period of the hole array. This study determined that a strong resonant surface plasmonic mode at the resonance peak can confine approximately 80% of the electromagnetic field energy is demonstrated. Higher-order (second- and third-order) resonance peaks were also found, which is critical for controlling electromagnetic waves and research into new optoelectronic devices.
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/s13360-022-02427-x