Shapira, S. and Linfield, E. H. and Lambert, C. J. and Seviour, R. and Volkov, A. F. and Zaitsev, A. V. (2000) Anomalous behavior of superconducting-normal mesoscopic structures near T-c. Physical Review Letters, 84 (1). pp. 159-162.Full text not available from this repository.
We observe a maximum in the conductance of Al/n-GaAs junctions at temperatures 20 mK lower than the superconducting transition temperature (T-c). This is the first observation of a peak in the conductance near the superconducting transition in superconducting-normal (S/N) junctions. To accommodate this effect we calculate the full temperature dependence of the conductance of these structures, invoking quasiclassical Green's functions in the diffusive limit. In addition to the well-known low-temperature peak at temperatures on the order of the Thouless energy, we find a maximum near T-c. This peak has the same origin as the subgap conductance observed in S/N junctions at low temperatures.
|Journal or Publication Title:||Physical Review Letters|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Prof Colin J. Lambert|
|Deposited On:||04 Jul 2007|
|Last Modified:||04 Nov 2015 02:39|
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