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Occupation of a resonant level coupled to a chiral Luttinger liquid | | A Furusaki
; K A Matveev
; | | Date: |
3 Jun 2002 | | Journal: | Phys Rev Lett, 88 (22), 226404 | | Abstract: | We consider a resonant level coupled to a chiral Luttinger liquid which can be realized, e.g., at a fractional quantum Hall edge. We study the dependence of the occupation probability n of the level on its energy epsilon for various values of the Luttinger-liquid parameter g. At g<1/2, a weakly coupled level shows a sharp jump in n(epsilon) at the Fermi level. As the coupling is increased, the magnitude of the jump decreases until sqrt[2g], and then the discontinuity in n(epsilon) disappears. We show that n(epsilon) can be expressed in terms of the magnetization of a Kondo impurity as a function of magnetic field. | | Source: | PubMed, pmid12059439 | | Other source: | [GID 797694] cond-mat/0112426 | | Services: | Forum | Review | Favorites | |
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