Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-02-20
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
22 pages, 5 figures, many number examples. Considerations on a rather elementary basis. Problem becomes clear in view of refer
Scientific paper
Transport through a point contact is accurately modelled by assigning to the junction an ensemble of independent transport channels with possibly different transmissions. We here argue that for a series of two contacts, coherently coupled across an island, the transport channels are different from the ensembles that would describe each contact taken as stand-alone device. We further show that instead of two sets of channels with manifold cross-links over the island the double junction can be described by pairs of channels from both sides coherently coupled together, where each pair, however, has no coherent connection to the others. This finding will substantially simplify modelling transport by a Green's functions technique. Additional channels through only one junction may complete the picture. Finally we discuss how partial coherence across the island with an appropriate ansatz can be modelled in the same scheme.
Scheer Elke
Schroeter Ursula
No associations
LandOfFree
Transport Channels in a Double Junction- coherent coupling changes the picture 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 Transport Channels in a Double Junction- coherent coupling changes the picture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transport Channels in a Double Junction- coherent coupling changes the picture will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-671041