Persistent current of one-dimensional perfect rings under the canonical ensemble.
نویسندگان
چکیده
منابع مشابه
Electron-electron interactions in one- and three-dimensional mesoscopic disordered rings: A perturbative approach.
We have computed persistent currents in a disordered mesoscopic ring in the presence of small electron-electron interactions, treated in first order perturbation theory. We have investigated both a contact (Hubbard) and a nearest neighbour interaction in 1D and 3D. Our results show that a repulsive Hubbard interaction produces a paramagnetic contribution to the average current (whatever the dim...
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Persistent current and low-field magnetic susceptibility in single-channel normal metal rings threaded by a magnetic flux φ are investigated within the tight-binding framework considering long-range hopping of electrons in the shortest path. The higher order hopping integrals try to reduce the effect of disorder by delocalizing the energy eigenstates, and accordingly, current amplitude in disor...
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عنوان ژورنال:
- Physical review. B, Condensed matter
دوره 53 3 شماره
صفحات -
تاریخ انتشار 1996