Transmission phase evolution in fully screened and overscreened Kondo impurities
| Autor: | D. B. Karki |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Work (thermodynamics) Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics FOS: Physical sciences Boundary (topology) 02 engineering and technology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Thermal conduction 01 natural sciences Phase evolution Condensed Matter - Strongly Correlated Electrons Transmission (telecommunications) Quantum dot Impurity 0103 physical sciences Condensed Matter::Strongly Correlated Electrons Connection (algebraic framework) 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 103 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.103.235403 |
| Popis: | We study the coherent properties of fully screened and overscreened Kondo effects based on the Nozieres local Fermi-liquid theory and Affleck-Ludwig boundary conformal-field-theory approach, respectively. Coherent transports through an $\mathrm{SU}(N)$ generalization of fully screened and the multi-$\mathcal{K}$-channel overscreened Kondo impurities at and beyond the particle-hole (PH) symmetric point are thoroughly investigated. We report distinctive Fermi-liquid coefficients characterizing the finite temperature correction to the transmission phase shift and normalized visibility in fully screened Kondo regime, which can be measured with the existing experimental setups. Our work equally uncovers the significance of temperature correction to the transmission phase shift and visibility in non-Fermi-liquid regime associated with the PH asymmetric overscreened Kondo effects with an arbitrary number of conduction channels $\mathcal{K}$. We propose viable roots of verifying our predictions in connection to the recent experiments, in particular with the experiments studying highly symmetric forms of fully screened Kondo effects and two-channel overscreened Kondo effects realized in quantum dot nanostructures. |
| Databáze: | OpenAIRE |
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