Charge transport across a mesoscopic superconductor–normal metal junction: coherence and decoherence effects

Belogolovskii, M. and Golubov, A. and Grajcar, M. and Kupriyanov, M. Yu. and Seidel, P. (2001) Charge transport across a mesoscopic superconductor–normal metal junction: coherence and decoherence effects. Physica C: Superconductivity, 357-36 (Part 2). pp. 1592-1595. ISSN 0921-4534

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Abstract:	We present a simple scattering approach to the charge transport across a realistic superconductor–normal injector interface of a finite transmittance that is modeled by a double-barrier mesoscopic junction. For a d-wave pairing symmetry, our calculations combine a fully quantum-mechanical scattering formalism with a self-consistent estimation of Andreev reflection coefficients within the quasi-classical Eilenberger equation scheme for a free specular superconducting surface. Numerical simulations confirm experimental criteria of Cucolo for the unconventional superconducting origin of conductance anomalies in high-temperature oxides. A discussion of dephasing effects caused by inelastic scattering processes in the interlayer and their impact on the conductance spectra is given.
Item Type:	Article
Copyright:	© 2001 Elsevier
Faculty:	Science and Technology (TNW)
Research Group:	Low Temperatures - Biomagnetism (LT)
Link to this item:	http://purl.utwente.nl/publications/74535
Official URL:	http://dx.doi.org/10.1016/S0921-4534(01)00559-7
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