One-dimensional Josephson arrays as superlattices for single Cooper pairs
A. A. Odintsov
DOI 10.1103/PhysRevB.54.1228 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We investigate uniform one-dimensional arrays of small Josephson junctions [EJ≪EC, EC=(2e)2/2C] with a realistic Coulomb interaction U(x)=ECλexp(-|x|/λ) (here λ≫1 is the screening length in units of the lattice constant of the array). At low energies this system can be described in terms of interacting Bose particles (extra single Cooper pairs) on the lattice. With increasing concentration ν of extra Cooper pairs, a crossover from the Bose gas phase to the Wigner crystal phase and then to the superlattice regime occurs. The phase diagram in the superlattice regime consists of commensurable insulating phases with ν=1/l (l is integer) separated by superconducting regions where the current is carried by excitations with fractional electric charge q=±2e/l. The Josephson current through a ring-shaped array pierced by magnetic flux is calculated for all of the phases. © 1996 The American Physical Society.
Similar papers
Single Cooper-pair tunneling in small-capacitance junctions
similarity 0.89L. J. Geerligs et al.
Source status unknown — claims are unverified
Cooper-pair tunneling in small junctions with tunable Josephson coupling
similarity 0.88Yuichi Harada et al.
Source status unknown — claims are unverified
Arrays of Josephson junctions in an environment with vanishing impedance
similarity 0.87M. Aunola et al. · 1999 · arXiv:cond-mat/9911368
Source status unknown — claims are unverified
A superconductor-insulator transition in a one-dimensional array of Josephson junctions
similarity 0.87V. Gurarie & A. M. Tsvelik · 2003 · arXiv:cond-mat/0305245
Source status unknown — claims are unverified
Characterization of Anomalous Pair Currents in Josephson Junction Networks
similarity 0.87I. Ottaviani et al. · 2013 · arXiv:1309.2836
Source status unknown — claims are unverified
Generalized dc and ac Josephson effects in antiferromagnets and in antiferromagnetic d-wave superconductors
similarity 0.87D. Chassé & A.-M. S. Tremblay
Source status unknown — claims are unverified