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Hydrodynamic Modeling of Spin-Polarized Edge Magnetoplasmons

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Abstract

A novel method, the so-called magneto-optical interaction, is gaining increasing interest for realizing the localization of the electromagnetic radiation to subwavelength scales and enhancement of the local electric fields. We investigate spin-polarized edge magnetoplasmons based on the spin-dependent quantum hydrodynamic model, in a bounded two-dimensional electron gas with perpendicular magnetic field and an electromagnetic wave. The effects of the Fermi pressure associated with Pauli exclusion principle and quantum force due to the Bohm potential, and the effect of the spin-induced ponderomotive force, are taken into consideration. Full spin-polarized edge state exists at the boundary of the two-dimensional electron gas. Spin rotation occurs due to the magneto-optical kerr effect. The existence of the electromagnetic field could reduce the spin amplitude and increase the spin rotation time, since their magnitude oscillates between positive and negative values and hinders the spin precession.

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Funding

This work was supported by the Natural Science Foundation of China (NSFC) (11775164,11575135). This is also supported by the Fundamental Research Funds for the Central Universities (WUT: 2017IVA79, 2018B011, 2018IB009).

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Authors and Affiliations

  1. Department of Physics, Wuhan University of Technology, Wuhan, 430070, China

    Y. Zhang & B. Guo

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  1. Y. Zhang
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  2. B. Guo
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Correspondence to B. Guo.

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Zhang, Y., Guo, B. Hydrodynamic Modeling of Spin-Polarized Edge Magnetoplasmons. Plasmonics 14, 799–805 (2019). https://doi.org/10.1007/s11468-018-0860-x

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  • DOI: https://doi.org/10.1007/s11468-018-0860-x

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