Harmonic generation and flux quantization in granular superconductors

Q. Harry Lam; Carson D. Jeffries

doi:10.1103/PhysRevB.39.4772

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Harmonic generation and flux quantization in granular superconductors

Q. Harry Lam, Carson D. Jeffries

DOI 10.1103/PhysRevB.39.4772 · Physical Review B

T1

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Abstract

Simple dynamical models of granular superconductors are used to compute the generation of harmonic power in ac and dc magnetic fields. In zero order, the model is a single superconducting loop, with or without a weak link. The sample-average power is predicted by averaging over suitable distribution functions for loop areas and orientations in a dc magnetic field. In a first-order model, inductance and resistance are also included. In all models the power at high harmonics shows strikingly sharp dips periodic in the dc field, revealing flux quantization in the prototype loops.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	77	Pressure not reported	unknown
Bi4Sr3Ca3Cu4O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown