Phase sensitive electron-phonon coupling in a superconducting proximity structure
arXiv:0810.4843 · doi:10.1103/PhysRevB.79.094514
Abstract
We study the role of the superconducting proximity effect on the electron-phonon energy exchange in diffusive normal metals (N) attached to superconductors (S). The proximity effect modifies the spectral response of the normal metal, in particular the local density of states. This leads to a weakening of the electron-phonon energy relaxation. We show that the effect is easily observable with modern thermometry methods, and predict that it can be tuned in structures connected to multiple superconductors by adjusting the phase difference between superconducting order parameters at the two NS interfaces.
7 pages, 6 figures, published version
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- Phase-dependent heat transport through magnetic Josephson tunnel junctions
- Physics of Proximity Josephson Sensor
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- Electron cooling by phonons in superconducting proximity structures
- Observing temperature fluctuations of a mesoscopic electron system