2003/10/09 by W. A. Al-Saidi, D. Stroud
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.supr-con
paper · pdf · doi:10.1016/j.physc.2003.10.005
published as Physica C, Vol 402/1-2 pp. 216-222 (2003) · 11 pages, 5 figures. To be published in Physica C. Two references are added and few typos are corrected
arxiv created 2003/10/09 · openalex publication_date 2003/11/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have studied the superconducting-insulating phase transition in a disordered two-dimensional Josephson junction array, using quantum Monte Carlo techniques. We consider disorder in both the capacitive energies and in the values of the offset charges. The calculated phase diagram shows that the lobe structure of the phase diagram disappears for sufficiently strong disorder in the offset charge. Our results agree quite well with previous calculations carried out using a mean-field approximation.