The fractional Aharonov-Bohm effect in mesoscopic rings
We study the effects of correlations on a one-dimensional ring threaded by a uniform magnetic flux. In order to describe the interaction between particles, we work in the framework of the U = ∞ Hubbard model and the t-J z and t-J z -J t models. We focus on the dilute limit. Our results suggest the p...
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09538984_v8_n44_p8583_Ferrari |
| Aporte de: |
| Sumario: | We study the effects of correlations on a one-dimensional ring threaded by a uniform magnetic flux. In order to describe the interaction between particles, we work in the framework of the U = ∞ Hubbard model and the t-J z and t-J z -J t models. We focus on the dilute limit. Our results suggest the possibility that the persistent current has an anomalous periodicity φ 0 /p, where p is an integer in the range 2 ≤ p ≤ N e (N e is the number of particles in the ring and φ 0 is the flux quantum). We find that this result depends neither on disorder nor on the detailed form of the interaction, while there is still on-site infinite repulsion. |
|---|