Toward tailoring Majorana bound states in artificially constructed magnetic atom chains on elemental superconductors.

ABSTRACT: Realizing Majorana bound states (MBS) in condensed matter systems is a key challenge on the way toward topological quantum computing. As a promising platform, one-dimensional magnetic chains on conventional superconductors were theoretically predicted to host MBS at the chain ends. We demonstrate a novel approach to design of model-type atomic-scale systems for studying MBS using single-atom manipulation techniques. Our artificially constructed atomic Fe chains on a Re surface exhibit spin spiral states and a remarkable enhancement of the local density of states at zero energy being strongly localized at the chain ends. Moreover, the zero-energy modes at the chain ends are shown to emerge and become stabilized with increasing chain length. Tight-binding model calculations based on paramete

SUBMITTER: Kim H 

PROVIDER: S-EPMC5947976 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature