Počet záznamů: 1
Lieb lattices and pseudospin-1 dynamics under barrier- and well-like electrostatic interactions
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SYSNO ASEP 0577211 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Lieb lattices and pseudospin-1 dynamics under barrier- and well-like electrostatic interactions Tvůrce(i) Jakubský, Vít (UJF-V) RID, ORCID, SAI
Zelaya, Kevin (UJF-V) RID, ORCID, SAICelkový počet autorů 2 Číslo článku 115738 Zdroj.dok. Physica E: Low-Dimensional Systems and Nanostructures. - : Elsevier - ISSN 1386-9477
Roč. 152, AUG (2023)Poč.str. 11 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Pseudospin-1 Hamiltonian ; Lieb lattice ; Electron localization ; Resonant transmission ; Super-Klein tunneling ; Flat-band solutions Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP EF18_053/0017163 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UJF-V - RVO:61389005 UT WOS 001080444000001 EID SCOPUS 85156211898 DOI 10.1016/j.physe.2023.115738 Anotace This work considers the confining and scattering phenomena of electrons in a Lieb lattice subjected to the influence of a rectangular electrostatic barrier. In this setup, hopping amplitudes between nearest neighbors in orthogonal directions are considered different, and the next-nearest neighbor interaction describes spin-orbit coupling. This makes it possible to confine electrons and generate bound states, the exact number of which is exactly determined for null momentum parallel to the barrier. In such a case, it is proved that one even and one odd bound state is always generated, and the number of bound states increases for non-null and increasing values of the parallel momentum. That is, current-carrying states are generated. In the scattering regime, the energies are determined so that resonant tunneling occurs. The existence of perfect tunneling energy in the form of super-Klein tunneling is proved to exist regardless of the bang gap opening. Finally, it is shown that perfect reflection appears when solutions are coupled to the intermediate flat-band solution. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2024 Elektronická adresa https://doi.org/10.1016/j.physe.2023.115738
Počet záznamů: 1