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Sumathi Rao
Novel fixed points at a junction of quantum Hall line junctions

Location: Fachbereich Physik, SR E1
Time: Wednesday 25.04.2007, 10h c.t.

I will give a brief introduction to the problem of a junction of quantum wires, with some earlier results. Then I will discuss a problem where the quantum wires are realised as fractional quantum Hall effect line junctions. We find an intermediate regime of inter-edge interactions where both the "flower" and the "islands" fixed points are stable. Finally, I will briefly mention the results of having a spin impurity at the junction and charge pumping through the junction.

More information: F. von Oppen (vonoppenphysik.fu-berlin.de)

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Stand: 18.04.2007