1995/01/16 by G. Falci, Rosario Fazio, A. Tagliacozzo +1 · 9 citations
Physics and Astronomy · #Andreev reflection #Chain (unit) #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Conductance #Coulomb #Electron #Gapless playback #Josephson effect #Luttinger liquid #Physics #Physics of Superconductivity and Magnetism #Pi Josephson junction #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Superconductivity #cond-mat
paper · pdf · doi:10.1209/0295-5075/30/3/008
published in Europhysics Letters (EPL) 30(3), 169-174 (Institute of Physics) · 8 pages LATEX, 3 figures available upon request
arxiv created 1995/01/16 · openalex publication_date 1995/04/20 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In this letter we consider Andreev tunnelling between a normal metal and a one-dimensional Josephson junction array with finite-range Coulomb energy. The I-V characteristics strongly deviate from the classical linear Andreev current. We show that the non-linear conductance possesses interesting scaling behaviour when the chain undergoes a T = 0 superconductor-insulator transition. When the chain is superconducting, the low-lying excitations are gapless and the I-V curves are power law. When the chain is insulating the Andreev current is blocked up to a threshold voltage, proportional to the inverse correlation length of the chain, which vanishes at the transition point.