Microwave absorption in s- and d-wave disordered superconductors
Mai Suan Li
DOI 10.1103/PhysRevB.64.144501 · Physical Review B
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Abstract
We model s- and d-wave ceramic superconductors with a three-dimensional lattice of randomly distributed 0 and π Josephson junctions with finite self-inductance. The field and temperature dependences of the microwave absoption are obtained by solving the corresponding Langevin dynamical equations. We find that at magnetic field H=0 the microwave absoption of the s-wave samples, when plotted against the field, has a minimum at any temperature. In the case of d-wave superconductors one has a peak at H=0 in the temperature region where the paramagnetic Meissner effect is observable. These results agree with experiments. The dependence of the microwave absorption on the screening strength was found to be nontrivial due to the crossover from the weak to the strong screening regime.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Al 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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