Tunable localized surface plasmon resonances in one-dimensional h-BN/graphene/h-BN quantum-well structure |
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Affiliation: | 1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;2. School of Science, Sichuan University of Science and Engineering, Zigong 643000, China;3. College of Physical Science and Technology, Sichuan University, Chengdu 610065, China;4. Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610064, China |
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Abstract: | The graphene/hexagonal boron-nitride(h-BN) hybrid structure has emerged to extend the performance of graphenebased devices. Here, we investigate the tunable plasmon in one-dimensional h-BN/graphene/h-BN quantum-well structures.The analysis of optical response and field enhancement demonstrates that these systems exhibit a distinct quantum confinement effect for the collective oscillations. The intensity and frequency of the plasmon can be controlled by the barrier width and electrical doping. Moreover, the electron doping and the hole doping lead to very different results due to the asymmetric energy band. This graphene/h-BN hybrid structure may pave the way for future optoelectronic devices. |
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Keywords: | plasmon graphene time-dependent density functional theory |
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