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Kondo impurities in nanoscopic systems: new confinement-induced regimes | | P. S. Cornaglia
; C. A. Balseiro
; | | Date: |
26 Feb 2002 | | Journal: | Phys. Rev. B 66, 115303 (2002) DOI: 10.1103/PhysRevB.66.115303 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | We present results for Kondo impurities in nanoscopic systems. Using exact diagonalization in small clusters and Wilson’s renormalization group we analyze an isolated system and a nanoscopic system weakly coupled to a macroscopic reservoir. In the latter case, new regimes not observed in macroscopic homogeneous systems are induced by the confinement of conduction electrons. These new confinement-induced regimes are very different depending on whether the Fermi energy coincides with the energy of a resonant state or lies between two quasi-bound states. | | Source: | arXiv, cond-mat/0202489 | | Services: | Forum | Review | PDF | Favorites | |
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