Universal conductance for the Anderson model
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Data
2010-09-30
Autores
Oliveira, L. N.
Yoshida, M. [UNESP]
Seridonio, A. C.
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Resumo
We discuss the thermal dependence of the zero-bias electrical conductance for a quantum dot embedded in a quantum wire, or side-coupled to it. In the Kondo regime, the temperature-dependent conductances map linearly onto the conductance for the symmetric Anderson Hamiltonian. The mapping fits accurately numerical renormalization-group results for the conductance in each geometry. In the side-coupled geometry, the conductance is markedly affected by a gate potential applied to the wire; in the embedded geometry, it is not. © 2010 IOP Publishing Ltd.
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Palavras-chave
Anderson Hamiltonian, Anderson models, Electrical conductance, Gate potentials, Kondo regime, Quantum Dot, Quantum wires, Renormalization group, Temperature dependent, Thermal dependences, Zero-bias, Wire, Computational geometry
Como citar
Journal of Physics: Conference Series, v. 200, n. SECTION 5, 2010.