Nonlinear electrodynamics and nonresonant microwave absorption in ceramic superconductors
Ting- kang Xia, D. Stroud
DOI 10.1103/PhysRevB.39.4792 · Physical Review B
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Abstract
We work out some of the consequences of a simple model for nonlinear electrodynamics and nonresonant microwave absorption in the high-temperature superconductors. The model assumes that these materials contain loops of weakly coupled superconducting grains. As the magnetic field is changed, a loop jumps from one energy state to another, thus experiencing phase slips. This produces both electromagnetic absorption through the normal shunt resistance in the junctions, and induced currents at high-order multiples of the applied frequency. The calculated power spectrum from a single loop, with and without a dc applied magnetic field, is in qualitative agreement with the measurements of Jeffries et al. [Phys. Rev. B 37, 9840 (1988)].
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ 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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