摘要
For the non-interacting electrons confined by a mesoscopic double-ring with a magnetic flux threading its centre, we consider the problem of persistent current at zero andfinite temperatures. Furthermore, the tight-binding modelis applied to give the expression of persistent current in this system. It is shown that, in this double-ring system, the phenomenon of entire period halving will occur.
作者
王海军
衣学喜
巴信武
WANG Hai-Jun;YI Xue-Xi;BA Xin-Wu(Department of Chemistry,Hebei University,Baoding 071002;Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100080;Institute of Theoretical Physics,Northeast Normal University,Changchun 130024)