Ferromagnetic Fixed Point of the Kondo Model in a Luttinger Liquid

Details Ferromagnetic Fixed Point of the Kondo Model in a Luttinger Liquid Ferromagnetic Fixed Point of the Kondo Model in a Luttinger Liquid

2001-03-07

arxiv.org/abs/cond-mat/0103153v1

J. Phys.: Condens. Matter 13, 3271(2001)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 2 figures. Accepted for publication in J. Phys.: Condens. Matter

Scientific paper

10.1088/0953-8984/13/14/304

The Kondo effect in a Luttinger liquid is studied using the renormalization group method. By renormalizing the boson fields, scaling equations to the second order for an arbitrary Luttinger interaction are obtained. For the ferromagnetic Kondo coupling, a spin bound state(triplet) can be realized without invoking a nearest neighbor spin interaction in agreement with the recent Bethe ansatz calculation. The scaling theory in the presence of the scalar potential shows that there is no interplay between the magnetic and non-magnetic interaction. Also a study on the crossover behavior of the Kondo temperature between the exponential and the power law type is presented.

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