AI Article Synopsis
- The study calculates the local density of states (LDOS) in the asymmetric Anderson model using a specific numerical approach to understand its mixed valence behavior.
- It identifies that the asymmetric shape of the LDOS around the Fermi level results from the interference between single particle and Kondo resonances.
- The findings reveal a correlation between the Kondo temperatures, obtained from fitting data, and previous theories, as well as variations in Fano factors that align with expected Fano resonance patterns.
Article Abstract
We numerically calculate the local density of states (LDOS) in asymmetric Anderson model in mixed valence regime using hierarchical equations of motion approach. Based on the idea that the asymmetric line shape of LDOS around Fermi level stems from the interference between the single particle resonance and the Kondo resonance, we perform a fitting. From the fitting results, we obtain the Kondo temperatures and the Fano factors with changing the single particle energy. The tendency of Kondo temperature agrees with the previous analytic expressions and the Fano factors are in an expected variation of Fano resonance. Our study shows that the Fano-Kondo resonance can reasonably explain the asymmetric line shape of the LDOS around the Fermi level.
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| http://dx.doi.org/10.1088/1361-648X/ac640a | DOI Listing |
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