Enhancement of quasiparticle recombination in Ta and Al superconductors by implantation of magnetic and nonmagnetic atoms
arXiv:0811.1961 · doi:10.1103/PhysRevB.79.020509
Abstract
The quasiparticle recombination time in superconducting films, consisting of the standard electron-phonon interaction and a yet to be identified low temperature process, is studied for different densities of magnetic and nonmagnetic atoms. For both Ta and Al, implanted with Mn, Ta and Al, we observe an increase of the recombination rate. We conclude that the enhancement of recombination is not due to the magnetic moment, but arises from an enhancement of disorder.
4 pages, 4 figures
References in corpus (7)
- Model for l/f Flux Noise in SQUIDs and Qubits
- Magnetism in SQUIDs at Millikelvin Temperatures
- Contribution of dielectrics to frequency and noise of NbTiN superconducting resonators
- Quasiparticle relaxation in optically excited high-Q superconducting resonators
- Recombination limited energy relaxation in a BCS superconductor
- Magnetic field enhancement of superconductivity in ultra-narrow wires
- Tunneling study of cavity grade Nb: possible magnetic scattering at the surface
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