Transport Properties of a Quantum Dot Restudied by Algebraic Equation of Motion

2023/05/04 by Jiangqi Mao, Mao, Jiangqi, Houmin Du +3
Physics and Astronomy · Engineering · #Quantum and electron transport phenomena #Molecular Junctions and Nanostructures #Semiconductor Quantum Structures and Devices

paper · pdf · doi:10.48550/arxiv.2305.02792

Abstract

Based on the algebraic equation of motion (AEOM) method, we investigate the transport properties of a quantum dot. We obtain an analytical expression for the dot electron single-particle Green's function, and based on this expression, we plot the dot electron density of states under different biases. We find that the Kondo resonance splits and is suppressed as the bias is increased. In addition, we calculate the differential conductance of the dot and obtain the zero-bias Kondo resonance at different temperatures, which is found to be suppressed as the temperature is increased.

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