CHARGE AND VORTEX DYNAMICS IN ARRAYS OF TUNNEL-JUNCTIONS
CHARGE AND VORTEX DYNAMICS IN ARRAYS OF TUNNEL-JUNCTIONS
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DOI：
10.1103/physrevb.43.5307
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发表时间：
1991-03-01
影响因子：
3.7
通讯作者：
SCHON, G
中科院分区：
文献类型：
--
作者：
FAZIO, R;SCHON, G
隧道结阵列可以用岛之间的最小近邻电容和甚至更小的岛的自电容来制造。Mooij等人提出了这一建议。这种阵列的岛屿上的电荷在很长的距离上以对数方式相互作用，因此，在电荷-反电荷对解离的地方，可能会发生Kosterlitz-Thouless-Berezinskii转变。此外，在超导结阵列中，可能会发生更常见的涡旋-解束缚转变。我们研究了单电子和库珀对隧道效应对这些跃迁的影响，并讨论了电荷和涡旋非束缚之间的竞争。
Arrays of tunnel junctions can be fabricated with small nearest-neighbor capacitances between the islands and with even smaller self-capacitances of the islands. It has been suggested by Mooij et al. that electric charges on the islands of such an array interact logarithmically over large distances, and as a consequence, a Kosterlitz-Thouless-Berezinskii transition can occur where charge-anticharge pairs dissociate. Furthermore, in superconducting junction arrays the more familiar vortex-unbinding transition can occur. We investigate the effect of single-electron and Cooper-pair tunneling on these transitions and discuss the competition between the charge and the vortex unbinding.