Continuous unitary transformation approach to the Kondo-Majorana interplay

We analyze a setup composed of a correlated quantum dot (QD) coupled to one metallic lead and one end of topological chain hosting a Majorana zero mode (MZM). In such a hybrid structure, a leakage of the MZM into the region of the QD competes with the Kondo resonance appearing as a consequence of th...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2023-07
Main Authors: Baranski, Jan, Baranska, Magdalena, Zienkiewicz, Tomasz, Tomaszewska, Justyna, Konrad Jerzy Kapcia
Format: Article
Language:English
Subjects:
Hybrid structures
Kondo temperature
Quantum dots
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We analyze a setup composed of a correlated quantum dot (QD) coupled to one metallic lead and one end of topological chain hosting a Majorana zero mode (MZM). In such a hybrid structure, a leakage of the MZM into the region of the QD competes with the Kondo resonance appearing as a consequence of the spin-exchange interactions between the dot and the lead. In the work, we use the nontrivial technique called the continuous unitary transformation (CUT) to analyze this competition. Using the CUT technique, we inspect the influence of the coupling between the QD and the chain on effective exchange interactions and calculate the resultant Kondo temperature.
ISSN:2331-8422
DOI:10.48550/arxiv.2307.12356