Optically induced quasiparticle density profiles in superconducting thin films
N. E. Glass, D. Rogovin
DOI 10.1103/PhysRevB.45.7346 · Physical Review B
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Abstract
We present numerical solutions of the coupled phonon-quasiparticle rate equations, with quasiparticle (qp) and phonon diffusion included, for a superconducting thin film illuminated by a temporally pulsed and spatially inhomogeneous optical intensity pattern. We consider optical intensities in the form of both a finite circular spot with a Gaussian cross section and a sinusoidal interference pattern. Thereby we demonstrate that spatially well-defined qp density profiles, including a qp grating, can be optically induced on nanosecond time scales. For the qp grating we use the T* formalism to calculate the resulting conductivity grating in the film, and then calculate the grating diffraction peaks for incident microwaves.
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 |
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