Szczegóły publikacji
Opis bibliograficzny
Chiral and nonchiral edge states in quantum Hall systems with charge density modulation / Paweł SZUMNIAK, Jelena Klinovaja, Daniel Loss // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2016 — vol. 93 iss. 24, s. 245308-1–245308-7. — Bibliogr. s. 245308-7. — Publikacja dostępna online od: 2016-06-27. — P. Szumniak – dod. afiliacja: University of Basel
Autorzy (3)
- AGHSzumniak Paweł
- Klinovaja Jelena
- Loss Daniel
Dane bibliometryczne
| ID BaDAP | 103211 |
|---|---|
| Data dodania do BaDAP | 2017-01-24 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.93.245308 |
| Rok publikacji | 2016 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We consider a system of weakly coupled wires with quantum Hall effect (QHE) and in the presence of a spatially periodic modulation of the chemical potential along the wire, equivalent to a charge density wave (CDW). We investigate the competition between the two effects which both open a gap. We show that by changing the ratio between the amplitudes of the CDW modulation and the tunneling between wires, one can switch between nontopological CDW-dominated phase to topological QHE-dominated phase. Both phases host edge states of chiral and nonchiral nature robust to on-site disorder. However, only in the topological phase, the edge states are immune to disorder in the phase shifts of the CDWs. We provide analytical solutions for filling factor nu = 1 and study numerically effects of disorder as well as present numerical results for higher filling factors.
