Tunable spin hall effect via hybrid polaritons around epsilon-near-zero on graphene-hBN heterostructures

Tunable spin hall effect via hybrid polaritons around epsilon-near-zero on graphene-hBN heterostructures

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We present a tunable spin Hall effect of light (SHEL) by introducing a monolayer of graphene on the hexagonal boron nitride (hBN).The interaction between the phonon polaritons in hBN and the plasmon polaritons in graphene can Steamrollers significantly enhance the SHEL around epsilon-near-zero (ENZ) near reststrahlen band-I (RB-I) in a very wide range of incident angles and compress it obviously in reststrahlen band-II (RB-II).The spin shifts can be obtained by adjusting the ratio of reflective coefficient and the phase difference for s- and p-waves which can be easily manipulated by the chemical potential.

The effect of the tilted angle, thickness of hBN and Cleaning / Dishwashing Aprons incident angle on the SHEL is also discussed.These findings may lead to the potential applications for the nano-optical device based on the spin optics and the control of photons.