QC397 : Electronic transport through a quantum dot embedded in a quantum wire
Thesis > Central Library of Shahrood University > Physics > MSc > 2017
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Abstarct: The study of electrical conductivity in nanostructures is one of the most fundamental issues in the physics of nanostructures. In recent years, the interest of many physicists has been focused on the study of the electronic conductivity in quantum wires and quantum dots. In most cases, the Landauer Buttiker formalism, which relates the electronic conductivity of a single-channel system to the electronic transmission coefficients, is used to calculate the conductance of the system. Here, the electron transport through a quantum dot, embedded in a quantum well wire is investigated via representing the quantum dot by a Gaussian-type scattering potential. First, through the Lippmann-Schwinger approach, the transmission amplitudes of the scattered electrons is determined. Then, the conductance of the system is obtained using the Landauer Buttiker formalism. Finally, by numerical calculations, the dependence of the conductance to the transversal position and some specifics of the scattering potential of the embedded dot is examined.
Keywords:
#Quantum wire #conductance #electron transport #Lippmann-Schwinger #Landauer Buttiker
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
Visitor: