Consideration of ac Josephson Effect in Fractional Quantum Hall States
| dc.creator | Sasaki, Shosuke | |
| dc.date | 2008-07-02 | |
| dc.date.accessioned | 2026-07-07T09:48:02Z | |
| dc.date.available | 2026-07-07T09:48:02Z | |
| dc.description | The ac Josephson effect phenomenon is studied in fractional quantum Hall states (FQHS). Usual quantum Hall devices have an electron layer of uniform thickness. We consider a new quantum Hall device. The device has a narrow part that is vertical to the direction of the current. The narrow part has a smaller electron layer thickness than in the other part. The ac Josephson effect might be observed when the magnetic field or the electric current is modulated by an oscillation with a constant frequency value f. Steps of the voltage appear when an electric current exceed a threshold value. The step value V is related to the transfer charge Q as V=(2 pi hbar f)/Q. We examine how the value of the transfer charge Q depends on the fractional filling factor nu. The nu - dependence of Q is affected by the wave function of the fractional quantum Hall state. We classify the value of Q according to the wave function type. Accordingly, observation of the ac Josephson effect in FQHS clarifies the structure of the fractional quantum Hall states. | |
| dc.description | 5 pages, 4 figures, submitted to Journal of Physics: Conference Series | |
| dc.identifier | https://arxiv.org/abs/0807.0288 | |
| dc.identifier | http://arxiv.org/abs/0807.0288 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/164062 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Consideration of ac Josephson Effect in Fractional Quantum Hall States | |
| dc.type | text |