Naslov
The coupling effects of surface plasmons and Fermi arc plasmons in Weyl semimetals

Autori
Bonačić Lošić, Željana

Izvornik
Journal of physics. Condensed matter (0953-8984) 31 (2019), 28; 285001, 9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Weyl semimetal ; surface plasmon ; Fermi arc plasmon

Sažetak
We study the effects of coupling between surface plasmon and Fermi arc plasmon modes on a planar surface of the Weyl semimetal. A model Hamiltonian is proposed in the second quantization representation for the system of coupled surface plasmon and Fermi arc plasmon modes. We obtain the dispersion relations of coupled modes using the Bogoliubov transformation technique. We identify the upper coupled mode as the renormalized surface plasmon and the lower coupled mode as the renormalized Fermi arc plasmon. It is shown how the magnitude of the coupling depends on both the bare mode dispersions and their dampings. We also demonstrate that coupling increases the surface plasmon mode lifetime. Obtained results for the surface plasmon mode are qualitatively consistent with the recent experimental data of Weyl semimetals.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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