Chandra, Ravi V and Rao, S and Sen, D (2006) A multi-channel fixed point for a Kondo spin coupled to a junction of Luttinger liquids. In: Europhysics Letters, 75 (5). pp. 797-803.
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We study a system of an impurity spin coupled to a junction of several Tomonaga-Luttinger liquids using a renormalization group scheme. For the decoupled S-matrix at the junction, there is a range of Kondo couplings which ﬂow to a multi-channel fixed point for repulsive inter-electron interactions; this is associated with a characteristic temperature dependence of the spin-ﬂip scatterings. If the junction is governed by the Griffiths S-matrix, the Kondo couplings ﬂow to a strong-coupling fixed point where all the wires are decoupled.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to EDP Science.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Centre for High Energy Physics|
|Date Deposited:||26 Nov 2007|
|Last Modified:||01 Mar 2012 09:50|
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