物理
凝聚态物理
极化子
扭矩
各向同性
非平衡态热力学
卡西米尔效应
可见的
经典力学
光学
量子力学
作者
Chinmay Khandekar,Siddharth Buddhiraju,Paul Wilkinson,James K. Gimzewski,Alejandro W. Rodríguez,Charles E. Chase,Shanhui Fan
出处
期刊:Physical review
日期:2021-12-27
卷期号:104 (24)
被引量:17
标识
DOI:10.1103/physrevb.104.245433
摘要
We show that an isotropic dipolar particle in the vicinity of a substrate made of nonreciprocal plasmonic materials can experience a lateral thermal-fluctuations-induced force and torque when the particle's temperature differs from that of the slab and the environment. We connect the existence of the lateral force to the asymmetric dispersion of nonreciprocal surface polaritons and the existence of the lateral torque to the spin-momentum locking of such surface waves. Using the formalism of fluctuational electrodynamics, we show that the features of lateral force and torque should be experimentally observable using a substrate of doped indium antimonide (InSb) placed in an external magnetic field, and for a variety of dielectric particles. Interestingly, we also find that the directions of the lateral force and the torque depend on the constituent materials of the particles, which suggests a sorting mechanism based on nonequilibrium fluctuational electrodynamics.
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