Physics – Condensed Matter – Superconductivity
Scientific paper
2009-01-04
Physica Review B 79, 174529 (2009)
Physics
Condensed Matter
Superconductivity
7 pages, 11 figures References updated; modifications in text style only; Accepted for publication in Physical Review B
Scientific paper
10.1103/PhysRevB.79.174529
The problem of Andreev reflection between a normal metal and a multiband superconductor is addressed. The appropriate matching conditions for the wave function at the interface are established on the basis of an extension of quantum waveguide theory to these systems. Interference effects between different bands of the superconductor manifest themselves in the conductance and the case of FeAs superconductors is specifically considered, in the framework of a recently proposed effective two-band model, in the sign-reversed s-wave pairing scenario. Resonant transmission through surface Andreev bound states is found as well as destructive interference effects that produce zeros in the conductance at normal incidence. Both these effects occur at nonzero bias voltage.
Araujo M. A. N.
Sacramento Pedro D.
No associations
LandOfFree
Quantum waveguide theory of Andreev reflection in multiband superconductors: the case of Fe-pnictides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantum waveguide theory of Andreev reflection in multiband superconductors: the case of Fe-pnictides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum waveguide theory of Andreev reflection in multiband superconductors: the case of Fe-pnictides will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-34475