| Zugriffsnummer | 15513 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Influence of correlated disorder potentials on the levitation of current carrying states in the quantum Hall effect |
| Autor(in); Institution |
Koschny, Thomas; Q.104, Kritisches Verhalten und Frequenzabhängigkeit beim Quanten-Hall-Effekt, PTB-Braunschweig
Schweitzer, Ludwig; Q.104, Kritisches Verhalten und Frequenzabhängigkeit beim Quanten-Hall-Effekt, PTB-Braunschweig
|
| Quelle/Jahr | Physica E: 12 (2002), 654 - 657 |
| ISSN | 1386-9477 |
| Verlag | Amsterdam [u.a.]: North-Holland, Elsevier Science |
| Freie Schlagworte | Quantum Hall to insulator transition ; Correlated random potentials ; Current carrying states |
| Zusammenfassung | The disorder driven quantum Hall to insulator transition is investigated for a two-dimensional lattice system. We consider a Gaussian correlated random potential, study the behaviour of the current carrying states and trace their energetical position when the disorder strength is increased. Our results qualitatively resemble those obtained previously for exponentially correlated disorder potentials. We find both the downward movement of the anti-Chern states as well as the floating up of the Chern states across the Landau gap which is sometimes masked by the global broadening of the tight binding band. |
