Lal, Siddhartha and Rao, Sumathi and Sen, Diptiman (2002) Junction of several weakly interacting quantum wires: A renormalization group study. In: Physical Review B, 66 . pp. 165327-1.
We study the conductance of three or more semi-infinite wires which meet at a junction. The electrons in the wires are taken to interact weakly with each other through a short-range density-density interaction, and they encounter a general scattering matrix at the junction. We derive the renormalization-group equations satisfied by the S-matrix, and we identify its fixed points and their stabilities. The conductance between any pair of wires is then studied as a function of physical parameters such as temperature. We discuss the possibility of observing the effects of junctions in present day experiments, such as the four-terminal conductance of a quantum wire and crossed quantum wires.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to American Physical Society (APS).|
|Department/Centre:||Division of Physical & Mathematical Sciences > Centre for Theoretical Studies|
|Date Deposited:||18 Jan 2007|
|Last Modified:||19 Sep 2010 04:16|
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