| DOI | Trouver le DOI : https://doi.org/10.1088/1367-2630/14/5/053002 |
|---|
| Auteur | Rechercher : Nádvorník, L.; Rechercher : Orlita, M.; Rechercher : Goncharuk, N.A.; Rechercher : Smrčka, L.; Rechercher : Novák, V.; Rechercher : Jurka, V.; Rechercher : Hruška, K.; Rechercher : Výborný, Z.; Rechercher : Wasilewski, Z.R.1; Rechercher : Potemski, M.; Rechercher : Výborný, K. |
|---|
| Affiliation | - Conseil national de recherches du Canada. Institut des sciences des microstructures du CNRC
|
|---|
| Format | Texte, Article |
|---|
| Sujet | Effective potentials; Far-infrared; GaAs; Lateral patterning; Lateral superlattice; Miniband structures; Minibands; Nonlinear dependence; Perturbative calculations; Resonance position; Electron gas; Magnetic fields; Graphene |
|---|
| Résumé | Cyclotron resonance has been measured in far-infrared transmission of GaAs/Al xGa 1-xAs heterostructures with an etched trigonal lateral superlattice intended to mimic graphene with lattice constant of the order of 100 nm (about 1000 times larger than that of natural graphene). Nonlinear dependence of the resonance position on magnetic field was observed, as well as its splitting into several modes. Our explanation, based on a perturbative calculation, describes the observed phenomena as a weak effect of the lateral potential on the twodimensional electron gas. Using this approach, we found a correlation between parameters of the lateral patterning and the created effective potential and obtained thus insights into how the electronic miniband structure has been tuned. The miniband dispersion was calculated using a simplified model and allowed us to formulate four basic criteria that have to be satisfied to reach graphene-like physics in such systems. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
|---|
| Date de publication | 2012 |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro NPARC | 21269534 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 98df1053-ffa2-4e9f-a621-48bbca4a80b9 |
|---|
| Enregistrement créé | 2013-12-12 |
|---|
| Enregistrement modifié | 2020-04-21 |
|---|
