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Parity Effect and Charge Binding Transition in Submicron Josephson Junction Arrays | | M. V. Feigel’man
; S. E. Korshunov
; A. B. Pugachev
; | | Date: |
18 Mar 1997 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Superconductivity | cond-mat.mes-hall cond-mat.supr-con | | Affiliation: | L.D.Landau Institute for Theoretical Physics, Moscow, Russia | | 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. | | Source: | arXiv, cond-mat/9703174 | | Services: | Forum | Review | PDF | Favorites | |
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