Renormalization-group study of a magnetic impurity in a Luttinger liquid

Details Renormalization-group study of a magnetic impurity in a Luttinger liquid Renormalization-group study of a magnetic impurity in a Luttinger liquid

1996-09-17

arxiv.org/abs/cond-mat/9609159v1

Physics

Condensed Matter

REVTeX, 4 pages, 3 epsf-embedded EPS figures

Scientific paper

10.1209/epl/i1997-00408-4

A generalized Anderson model for a magnetic impurity in an interacting one-dimensional electron gas is studied via a mapping onto a classical Coulomb gas. For weak potential scattering, the local-moment parameter regime expands as repulsive bulk interactions become stronger, but the Kondo scale for the quenching of the impurity moment varies nonmonotonically. There also exist two regimes dominated by backward potential scattering: one in which the impurity is nonmagnetic, and another in which an unquenched local moment survives down to very low temperatures.

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