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:
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
1996
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| 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. |
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| ISSN: | 09538984 |
| DOI: | 10.1088/0953-8984/8/44/010 |