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Spin-charge separation and Kondo effect in an open quantum dot | | L.I. Glazman
; F.W.J. Hekking
; A.I. Larkin
; | | Date: |
11 Mar 1999 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | We study a quantum dot connected to the bulk by single-mode junctions at almost perfect conductance. Although the average charge $elangle N
angle$ of the dot is not discrete, its spin remains quantized: $s=1/2$ or $s=0$, depending (periodically) on the gate voltage. This drastic difference from the conventional mixed-valence regime stems from the existence of a broad-band, dense spectrum of discrete levels in the dot. In the doublet state, the Kondo effect develops at low temperatures. We find the Kondo temperature $T_K$ and the conductance at $Tlesssim T_K$. | | Source: | arXiv, cond-mat/9903181 | | Services: | Forum | Review | PDF | Favorites | |
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