Lieb lattices and pseudospin-1 dynamics under barrier- and well-like electrostatic interactions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00577211" target="_blank" >RIV/61389005:_____/23:00577211 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.physe.2023.115738" target="_blank" >https://doi.org/10.1016/j.physe.2023.115738</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physe.2023.115738" target="_blank" >10.1016/j.physe.2023.115738</a>

Result language
angličtina
Original language name
Lieb lattices and pseudospin-1 dynamics under barrier- and well-like electrostatic interactions
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/EF18_053%2F0017163" target="_blank" >EF18_053/0017163: Physicists on the move II</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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