Interaction-Induced Renormalization of Tunneling into Multiple Majorana End States of a Topological Superconducting Wire
arXiv:1407.1145 · doi:10.1103/PhysRevLett.114.116801
Abstract
We investigate a system of multiple Majorana states at the end of a topological superconducting wire coupled to a normal lead. For a minimum of three Majorana fermions at the interface, we find nontrivial renormalization physics. Interface tunneling processes can be classified in terms of spin-1/2 and spin-3/2 irreducible representations of the SU(2) group. We show that the renormalization of the tunneling amplitudes belonging to different representations is completely different in that one type is suppressed, whereas the other is enhanced, depending on the sign of the interaction coupling. This results in distinct temperature dependencies of the tunneling current through the interface and different spin polarizations of this current.
5 pages, 1 figure
References in corpus (10)
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Classification of topological insulators and superconductors in three spatial dimensions
- Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
- Observing Majorana Bound States in p-wave Superconductors Using Noise Measurements in Tunneling Experiments
- Topological Kondo effect with Majorana fermions
- Theory of a resonant level coupled to several conduction electron channels in equilibrium and out-of-equilibrium
- Non-Fermi liquid manifold in a Majorana device
- Josephson effect in superconducting wires supporting multiple Majorana edge states
- Helical spin texture of surface states in topological superconductors