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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Friday, 11 November 2016
(at 13:45 in room 115, Hallwachsstr. 3)
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Kondo effect in the presence of Majorana Fermion

Dr. Damian Krychowski


Institute of Molecular Physics, Polish Academy of Sciences, Poland
   






The Majorana fermion is the non-abelian quasiparticle that is its own hole. The realization of these state is possible by the electron-hole triplet pairing at the ends of the topological superconducting wire. The principal aspect of the talk concerns on the spin polarized transport through the quantum dot in the Kondo regime with T-shaped attached topological superconducting wire. We show that the Majorana fermion decreases the conductance in one of the spin channel and modify the unitary limit of the total conductance in the Kondo range of different symmetries SU(N=2,3,4).
Non-standard evolution of the total conductance in the presence of the Zeeman effect demonstrates the coexistence of Kondo effect and Majorana state. The coupling of the spatially separated Majorana fermions increases conductance and drastically reduces the Kondo temperature.

Announcement (pdf)


Brief Bio:

Damian Krychowski is a research assistant in Nanostructures Theory Group in the Institute of Molecular Physics PAS in PoznaƄ. The main topics of his research interests are strong electron correlations in the mesoscopic systems, spin polarized transport and the shot noise. In 2010 he obtained Ph. D. degree in solid state physics at the Institute of Molecular Physics PAS.

Invited by G. Cuniberti

Within the nanoModSeminar

last modified: 2017.11.15 Mi
author: webadmin

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