18–23 Aug 2014
Nordita, Stockholm
Europe/Stockholm timezone

Topological Kondo effect

21 Aug 2014, 14:30
30m
Oskar Klein-auditoriet (FR4) (Nordita, Stockholm)

Oskar Klein-auditoriet (FR4)

Nordita, Stockholm

Speaker

Prof. Alexander Altland (Cologne University, Germany)

Description

Abstract: In this talk, we will briefly review recent progress in realizing Majorana fermion bound states in condensed matter devices. We will motivate a structure comprising semiconductor quantum wires coupled to a superconductor, and to external leads as the most generic device architecture realizing Majorana fermion transport by current date technology. In the main part of the talk we will discuss how a conspiracy of topological correlations and electrostatic interaction drive such 'Majorana quantum dots' to a fixed point fundamentally different from an ordinary Fermi liquid fixed point. At strong coupling, the system exhibits unconventional transport behavior and non-Fermi liquid correlations which make it distinct from any conventional quantum electronic device. We will close by discussing possible extensions of the elementary Kondo cell to more complex architectures.

Presentation materials