Abstract
A model for a quantum-mechanical weak link between two superconductors is discussed in which the tunneling of electron pairs is described by "isotopic spin" operators (T1, T2, T3) obeying [Ta,Tb] = iεabcTc. In the thermodynamic limit of infinite size for the superconductors, the model reduces to the quantum "Josephson pendulum." However, the model also holds true for mesoscopic grains, and thus allows for the quantum description of lowest-order finite-size effects.
Keywords
superconductors, quantum mechanical weak link, mesoscopic grains isotopic spin
Subject Categories
Isobaric spin, Josephson effect, Superconductors, Tunneling (Physics)
Publisher
American Physical Society
Publication Date
12-1-1992
Rights Information
Copyright 1992 American Physical Society
Rights Holder
American Physical Society
Permanent URL
Recommended Citation
Widom, A.; Srivastava, Y. N.; and Vittoria, C., "Isotopic spin formulation of the Josephson effect" (1992). Electrical and Computer Engineering Faculty Publications. Paper 62. http://hdl.handle.net/2047/d20002233
Notes
Originally published in Physical Review B 46, 13964-13966 (1992). doi 10.1103/PhysRevB46.13964 (http://link.aps.org/doi/10.1103/PhysRevB46.13964).