Circular heat and momentum flux radiated by magneto-optical nanoparticles
Circular heat and momentum flux radiated by magneto-optical nanoparticles
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DOI：
10.1103/physrevb.97.205414
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发表时间：
2018-02
影响因子：
3.7
通讯作者：
A. Ott;P. Ben-Abdallah;Svend‐Age Biehs
中科院分区：
文献类型：
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作者：
A. Ott;P. Ben-Abdallah;Svend‐Age Biehs
在这封信中，我们调查的热量和动量通量辐射的热磁光纳米粒子在其周围的作用下的外部磁场。我们发现，磁通线循环在一个封闭的区域在纳米距离的粒子周围的磁场轴在一个漩涡状的配置。此外，我们还证明了这些涡旋的空间取向（顺时针或逆时针）与拓扑荷m = +1或m = -1的光共振对热辐射的贡献有关。这项工作铺平了道路的磁光粒子晶格中的热量和动量输运的几何描述。此外，它可以在能量存储领域以及纳米级的热管理中具有重要的应用。
In the present Letter we investigate the heat and momentum fluxes radiated by a hot magneto-optical nanoparticle in its surrounding under the action of an external magnetic field. We show that the flux lines circulate in a confined region at nanometric distance from the particle around the axis of magnetic field in a vortex-like configuration. Moreover we prove that the spatial orientation of these vortices (clockwise or counterclockwise) is associated to the contribution of optical resonances with topological charges m = +1 or m = -1 to the thermal emission. This work paves the way to a geometric description of heat and momentum transport in lattices of magneto-optical particles. Moreover it could have important applications in the field of energy storage as well as in thermal management at nanoscale.