Non-Equilibrium Quasiclassical Theory for Josephson Structures
arXiv:cond-mat/0207724 · doi:10.1103/PhysRevB.68.054505
Abstract
We present a non-equilibrium quasiclassical formalism suitable for studying linear response ac properties of Josephson junctions. The non-equilibrium self-consistency equations are satisfied, to very good accuracy, already in zeroth iteration. We use the formalism to study ac Josephson effect in a ballistic superconducting point contact. The real and imaginary parts of the ac linear conductance are calculated both analytically (at low frequencies) and numerically (at arbitrary frequency). They show strong temperature, frequency, and phase dependence. Many anomalous properties appear near phi = pi. We ascribe them to the presence of zero energy bound states.
11 pages, 9 figures, Final version to appear in PRB
References in corpus (5)
- Mechanisms of Spontaneous Current Generation in an Inhomogeneous d-Wave Superconductor
- Quasiclassical Theory of Spontaneous Currents at Surfaces and Interfaces of d-Wave Superconductors
- d+is vs d+id' Time Reversal Symmetry Breaking States in Finite Size Systems
- Multi-Terminal Superconducting Phase Qubit
- High Temperature PI/2-SQUID