Surface plasmon-coupled radiative heat transfer between graphene-covered magnetic Weyl semimetals  

作　　者：SONG JinLin YAO XinJie JIN Lin CHEN Lei ZHAO HaiLong CHENG Qiang 

机构地区：[1]School of Electrical and Information Engineering,Wuhan Institute of Technology,Wuhan 430205,China [2]State Key Laboratory of Coal Combustion,School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Science China(Technological Sciences)》2024年第11期3405-3412,共8页中国科学（技术科学英文版）

基　　金：supported by the Startup Program at Wuhan Institute of Technology(Grant No.K2021026);the Open Foundation of State Key Laboratory of Coal Combustion(Grant No.FSKLCCA2303)。

摘　　要：Weyl semimetals(WSMs)have recently attracted considerable research attention because of their remarkable optical and electrical properties.In this study,we investigate the near-field radiative heat transfer(NFRHT)between graphene-covered Weyl slabs,particularly focusing on the supported coupled surface plasmon polaritons(SPPs).Unlike bare Weyl slabs where the epsilon-near-zero(ENZ)effect contributes the most to the NFRHT,adding a monolayer graphene sheet yields coupled SPPs,i.e.,the coupling of graphene SPPs(GSPPs)and Weyl SPPs(WSPPs),which dominates the NFRHT.The graphene sheet greatly suppresses the ENZ effect by compressing the parallel wavevector,thereby enabling the heat transfer coefficient(HTC)to be significantly changed.Further,for the graphene-covered magnetic Weyl slab configuration,an increase in the number of Weyl nodes suppresses the SPP coupling and ENZ effect,thereby weakening the NFRHT with a regulation ratio of 4.4 whereas an increase in the Fermi level slightly influences the NFRHT.Several typical heterostructures are also proposed for comparison,and results show that a mono-cell structure has the largest total HTC.Our findings will facilitate the understanding of surface plasmon-coupled radiative heat transfer and enable opportunities in energy harvesting and thermal management at the nanoscale based on WSM-based systems.

关 键 词：near-field radiative heat transfer Weyl semimetal surface plasmon polariton epsilon-near-zero graphene 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TB34[动力工程及工程热物理—热能工程]