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

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arxiv 2305.02792 v1 pith:MYRWGCGL submitted 2023-05-04 cond-mat.mes-hall cond-mat.str-el

Jiangqi Mao , Houmin Du , Yuliang Liu This is my paper
classification cond-mat.mes-hallcond-mat.str-el
keywords algebraicdifferentelectronequationexpressionincreasedkondomotion
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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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