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Showing 1 to 5 of 5 for “"Anderson impurity"”.
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Calculation of the optical conductivity for the Anderson impurity model using the slave boson technique
The optical conductivity of the Anderson impurity mode l has been calculated by emp l oying the slave boson technique and an expansion in powers of l i N, where N is the d egeneracy o f the f electron level . This method has been used to find the effective mass of the conduction electrons for …
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Método atômico para o modelo de Anderson em presença de um campo magnético externo.
We develop the atomic method (AM) for the Anderson impurity model under an external magnetic field. The Green s functions (GF) representing the exact solution of the impurity problem is written in terms of an effective cumulant, that in the atomic method is replaced by the atomic cumulant obtained …
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Renormalization for insulating states of matter
… Specifically, we explore the periodic Anderson impurity model with spin-orbit interactions, using the slave-particle method. As the thermopower is related to the entropy per carrier, particle-hole asymmetry and a large density of states at the chemical potential make Kondo insulator an …
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Theoretical study of Kondo effect and related transport properties in topological insulator systems
… in the Coulomb blockade and Kondo regime. An Anderson impurity model is applied to a TIQD system coupled to two external leads, and we show that the model realizes the spin-orbital Kondo effect at the Dirac point where the edge states are not split by a finite-size effect, leading to an …
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Functional renormalization group studies of quantum transport through mesoscopic systems
… wires with several barriers and of the single impurity Anderson model. The thesis starts with an introduction to Keldysh formalism and to related concepts. Then the structure of the Green and vertex functions of Keldysh formalism is investigated. This includes studying the consequences of …