Parity Effect and Charge Binding Transition in Submicron Josephson Junction Arrays
Abstract
We reconsider the issue of Berezinskii-Kosterlitz-Thouless (BKT) transition into an insulating state in the Coulomb-dominated Josephson junction arrays. We show that previously predicted picture of the Cooper-pair BKT transtion at T = T_2 is valid only under the condition that T_2 is considerably below the parity-effect temperature (which is usually almost 10 times below the value of superconductive transition temperature), and even in this case it is not a rigorous phase transition but only a crossover, whereas the real phase transition takes place at T_1 = T_2/4. Our theory is in agreement with available experimental data on Coulomb-dominated Josephson arrays and also sheds some light on the origin of unusual reentrant temperature dependence of resistivity in the array with nearly-criticial ratio of Coulomb to Josephson energies.
Cite
@article{arxiv.cond-mat/9703174,
title = {Parity Effect and Charge Binding Transition in Submicron Josephson Junction Arrays},
author = {M. V. Feigel'man and S. E. Korshunov and A. B. Pugachev},
journal= {arXiv preprint arXiv:cond-mat/9703174},
year = {2009}
}
Comments
4 pages, Revtex, to be published in JETP Letters, April 97