Study on the Kondo effect in the tunneling phenomena through a quantum dot

We review our recent studies on the Kondo effect in the tunneling phenomena through quantum dot systems. Numerical methods to calculate reliable tunneling conductance are developed. In the first place, a case in which electrons of odd number occupy the dot is studied, and experimental results are an...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2003-04, Vol.328 (1), p.125-130
Main Authors: Sakai, Osamu, Izumida, Wataru
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronic transport in multilayers, nanoscale materials and structures
Exact sciences and technology
Kondo effect
Numerical renormalization group method
Physics
Quantum dot
Quantum dots
Spin crossover transition
Tunneling
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Summary:We review our recent studies on the Kondo effect in the tunneling phenomena through quantum dot systems. Numerical methods to calculate reliable tunneling conductance are developed. In the first place, a case in which electrons of odd number occupy the dot is studied, and experimental results are analyzed based on the calculated result. Tunneling anomaly in the even-number-electron occupation case, which is recently observed in experiment and is ascribed to the Kondo effect in the spin singlet–triplet cross over transition region, is also examined theoretically.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(02)01826-4