| Records |
| Author |
Usadel, Klaus D. |
| Title |
Generalized diffusion equation for superconducting alloys |
Type |
Journal Article |
| Year |
1970 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
25 |
Issue |
8 |
Pages  |
507 |
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| Abstract |
Eilenberger's transportlike equations for a superconductor of type II can be simplified very much in the dirty limit. In this limit a diffusionlike equation is derived which is the generalization of the de Gennes-Maki theory for dirty superconductors to arbitrary values of the order parameter. |
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920 |
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| Author |
Johnson, M. A.; Betz, A. L.; Townes, C. H. |
| Title |
10-μm Heterodyne Stellar Interferometer |
Type |
Journal Article |
| Year |
1974 |
Publication |
Phys. Rev. Lett. |
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33 |
Issue |
27 |
Pages |
1617-1620 |
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American Physical Society |
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no |
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228 |
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Shah, Jagdeep; Pinczuk, A.; Gossard, A. C.; Wiegmann, W. |
| Title |
Energy-loss rates for hot electrons and holes in GaAs quantum wells |
Type |
Journal Article |
| Year |
1985 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
54 |
Issue |
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Pages |
2045-2048 |
| Keywords |
2DEG, GaAs/AlGaAs, heat flow, electron-phonon, hole-phonon, carrier-phonon, interactions |
| Abstract |
We report the first direct determination of carrier-energy-loss rates in a semiconductor. These measurements provide fundamental insight into carrier-phonon interactions in semiconductors. Unexpectedly large differences are found in the energy-loss rates for electrons and holes in GaAs/AlGaAs quantum wells. This large difference results from an anomalously low electron-energy-loss rate, which we attribute to the presence of nonequilibrium optical phonons rather than the effects of reduced dimensionality or dynamic screening. |
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633 |
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Pothier, H.; Guéron, S.; Birge, Norman O.; Esteve, D.; Devoret, M. H. |
| Title |
Energy distribution function of quasiparticles in mesoscopic wires |
Type |
Journal Article |
| Year |
1997 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
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| Volume |
79 |
Issue |
18 |
Pages |
3490-3493 |
| Keywords |
tunnel probe, metallic nanowire, diffusive wire, diffusive nanowire |
| Abstract |
We have measured with a tunnel probe the energy distribution function of Landau quasiparticles in metallic diffusive wires connected to two reservoir electrodes, with an applied bias voltage. The distribution function in the middle of a 1.5-μm-long wire resembles the half sum of the Fermi distributions of the reservoirs. The distribution functions in 5-μm-long wires are more rounded, due to interactions between quasiparticles during the longer diffusion time across the wire. From the scaling of the data with the bias voltage, we find that the scattering rate between two quasiparticles varies as <c9><203a>–2, where <c9><203a> is the energy transferred. |
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921 |
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| Author |
Anthore, A.; Pothier, H.; Esteve, D. |
| Title |
Density of states in a superconductor carrying a supercurrent |
Type |
Journal Article |
| Year |
2003 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
90 |
Issue |
12 |
Pages |
127001 (1 to 4) |
| Keywords |
Usadel, superconducting nanowire |
| Abstract |
We have measured the tunneling density of states (DOS) in a superconductor carrying a supercurrent or exposed to an external magnetic field. The pair correlations are weakened by the supercurrent, leading to a modification of the DOS and to a reduction of the gap. As predicted by the theory of superconductivity in diffusive metals, we find that this effect is similar to that of an external magnetic field. |
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Recommended by Klapwijk |
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no |
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924 |
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