Naslov
Surface plasmons in Dirac/Weyl semimetals

Autori
Bonačić Lošić, Željana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Solid-State Science & Research / Biliškov, Nikola ; Brekalo, Ivana ; Martinez, Valentina - Zagreb : Institut Ruđer Bošković, 2021, 103-103

ISBN
978-953-7941-35-2

Skup
Solid-State Science & Research 2021 (SCIRES2021)

Mjesto i datum
Zagreb, Hrvatska, 10.06.2021. - 11.06.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Weyl semimetal ; Surface plasmon ; Fermi arc plasmon

Sažetak
Three-dimensional topological Dirac/Weyl semimetals, which can be seen as the three-dimensional analogs of graphene, have been intensively studied recently. The dielectric formalism within the random phase approximation (RPA) gives a bulk plasmon mode which is responsible for the appearance of a well-defined surface plasmon mode in the structure factor. The obtained surface plasmon dispersion always stays below the bulk plasmon dispersion. In addition, Weyl semimetals comprise surface Fermi arc electron states which result with an anisotropic Fermi arc plasmon mode. We study the modification of the surface plasmon mode due to the Fermi arc plasmon mode using the dielectric formalism and the Bogoliubov transformation technique for a model Hamiltonian. The obtained results for the surface plasmon mode are consistent with the recent experimental data in these materials.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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