title: Multichannel Kondo impurity dynamics in a Majorana device.
abstract: We study the multichannel Kondo impurity dynamics realized in a mesoscopic superconducting island connected to metallic leads. The effective "impurity spin" is nonlocally realized by Majorana bound states and strongly coupled to lead electrons by non-Fermi liquid correlations. We explore the spin dynamics and its observable ramifications near the low-temperature fixed point. The topological protection of the system raises the perspective to observe multichannel Kondo impurity dynamics in experimentally realistic environments.
authors.affiliation: Institut für Theoretische Physik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Altland
authors.affiliation: School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.
authors.forename: B
authors.initials: B
authors.lastname: Béri
authors.affiliation: Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Egger
authors.affiliation: Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
authors.forename: A M
authors.initials: AM
authors.lastname: Tsvelik