Phys. Rev. B 51, 13813–13816 (1995)Self-sustained Aharonov-Bohm flux in mesoscopic rings: Continuum hard-core boson modelReceived 3 February 1995; published in the issue dated 15 May 1995 We perform analytical calculations to study the persistent current I of a q-charged hard-core boson gas in mesoscopic rings enclosing a magnetic flux Φ, and find that this current is periodic in Φ with the period Φ0=hc/q. More interestingly, in the presence of a single δ-function impurity, it has been found that there generally exists a spontaneous Aharonov-Bohm flux as long as the current-induced flux is included. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.51.13813
DOI:
10.1103/PhysRevB.51.13813
PACS:
03.65.Bz, 05.30.Jp
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