Eur. Phys. J. B 40, 409-413 (2004)
https://doi.org/10.1140/epjb/e2004-00209-7

Finite Josephson junction arrays with open boundaries in magnetic field: Ground state energy and first critical field

Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, R8402AGP S.C. de Bariloche, Argentina

Corresponding author: ^a hernan@cab.cnea.gov.ar

Received: 15 December 2003
Published online: 13 July 2004

Abstract

We have investigated the size dependence of the ground state energy as a function of the magnetic field in Josephson junction arrays with open boundaries. We present a simple rings model that reproduces with great confidence the size and field dependence of the energy of the system obtained by numerical simulation of the Hamiltonian. From these results we obtained the size dependence of the first penetration field, where the one-vortex state becomes favorable compared to the zero-vortex state.