Year: 1999
Type: article
Abstract: We study the Kondo effect in a quantum dot connected to leads by single-mode junctions at almost perfect conductance. In this new regime, the Kondo effect develops at a temperature ${T}_{K}$ that is sufficiently high for experiments. Unlike in the conventional case of small-conductance junctions, $G\ensuremath{\ll}{e}^{2}/h$, in the new regime the charge discreteness of the dot is completely lost, while its spin at $T\ensuremath{\gtrsim}{T}_{K}$ remains quantized at $s\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1/2$ (spin-charge separation). We find the temperature and gate-voltage dependence of the conductance through the dot in the conditions of spin-charge separation.
Source: Physical Review Letters
Authors: L. I. Glazman, F. W. J. Hekking, A. I. Larkin
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2138385233