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    Magnetically tunable multiband near-field radiative heat transfer between two graphene sheets

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    Type
    Article
    Authors
    Ge, Lixin
    Gong, Ke
    Cang, Yuping
    Luo, Yongsong
    Shi, Xi
    Wu, Ying cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Applied Mathematics and Computational Science Program
    KAUST Grant Number
    BAS/1626-01-01
    Date
    2019-07-11
    Permanent link to this record
    http://hdl.handle.net/10754/660079
    
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    Abstract
    Near-field radiative heat transfer (NFRHT) is strongly related with many applications such as near-field imaging, thermo-photovoltaics and thermal circuit devices. The active control of NFRHT is of great interest since it provides a degree of tunability by external means. In this work, a magnetically tunable multiband NFRHT is revealed in a system of two suspended graphene sheets at room temperature. It is found that the single-band spectra for B=0 split into multiband spectra under an external magnetic field. Dual-band spectra can be realized for a modest magnetic field (e.g., B=4T). One band is determined by intraband transitions in the classical regime, which undergoes a blue shift as the chemical potential increases. Meanwhile, the other band is contributed by inter-Landau-level transitions in the quantum regime, which is robust against the change of chemical potentials. For a strong magnetic field (e.g., B=15T), there is an additional band with the resonant peak appearing at near-zero frequency (microwave regime), stemming from the magnetoplasmon zero modes. The great enhancement of NFRHT at such low frequency has been little reported. This work may pave a way for multiband thermal information transfer based on atomically thin graphene sheets.
    Citation
    Ge, L., Gong, K., Cang, Y., Luo, Y., Shi, X., & Wu, Y. (2019). Magnetically tunable multiband near-field radiative heat transfer between two graphene sheets. Physical Review B, 100(3). doi:10.1103/physrevb.100.035414
    Sponsors
    This work is supported by the National Natural Science Foundation of China (Grants No. 11747100, No. 11704254, and No. 11804288), and the Innovation Scientists and Technicians Troop Construction Projects of Henan Province. The research of L.X.G. is further supported by Nanhu Scholars Program for Young Scholars of XYNU. Work in Saudi Arabia was supported by King Abdullah University of Science and Technology (KAUST) Baseline Research Fund BAS/1626-01-01.
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review B
    DOI
    10.1103/PhysRevB.100.035414
    Additional Links
    https://link.aps.org/doi/10.1103/PhysRevB.100.035414
    http://pdfs.semanticscholar.org/b8d9/867a280d2bb7bc1017c6635082a5d8874f4b.pdf
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevB.100.035414
    Scopus Count
    Collections
    Articles; Applied Mathematics and Computational Science Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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