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- Title
Majorana Coupling and Kondo Screening of Localized Spins.
- Authors
WÓJCIKA, K. P.; MAJEK, P.
- Abstract
We perform a theoretical analysis of the fate of the local magnetic moment of a quantum dot coupled to a normal metallic lead and a topological superconducting wire hosting Majorana modes at the ends. By means of simple analytical tools and numerical renormalization group calculations, we show that the proximity of the Majorana mode reduces the magnetic moment from 1=4, characteristic of a free spin 1=2, to 1=16. Coupling to the normal lead then causes the Kondo effect, such that the magnetic moment is fully screened below the Kondo temperature. The latter is vastly increased for strong coupling to Majorana mode.
- Subjects
KONDO effect; RENORMALIZATION group; MAGNETIC moments; SUPERCONDUCTING wire; QUANTUM dots
- Publication
Acta Physica Polonica: A, 2023, Vol 143, Issue 2, p207
- ISSN
0587-4246
- Publication type
Article
- DOI
10.12693/APhysPolA.143.207