Weak-link magnetically modulated resistance response in granular superconducting systems
Taner Edis, Kishin Moorjani
DOI 10.1103/PhysRevB.51.1124 · Physical Review B
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Abstract
Experimentally, magnetically modulated resistance (MMR) techniques are effective in ascertaining the properties of granular superconductors, which can be modeled as a network of Josephson junctions. Each junction is parametrized by a critical current, with a capacitance and resistance in parallel to account for the nonsupercurrent components. The overall current-voltage behavior of the network, in the presence of an external magnetic field, is given by a set of coupled nonlinear ordinary differential equations, which are studied numerically. Features of interest in the simulated experiments arise from effects of the applied field on couplings, and the transitions between multiple solution classes of the differential equations. Through these simulations of the phase dynamics, details of the weak link MMR signal can be understood, the typical signal being reproduced with large enough networks.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| EuBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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