Work

Zero-Energy Modes from Coalescing Andreev States in a Two-Dimensional Semiconductor-Superconductor Hybrid Platform

Year: 2017

Type: article

Abstract: We investigate zero-bias conductance peaks that arise from coalescing subgap Andreev states, consistent with emerging Majorana zero modes, in hybrid semiconductor-superconductor wires defined in a two-dimensional InAs/Al heterostructure using top-down lithography and gating. The measurements indicate a hard superconducting gap, ballistic tunneling contact, and in-plane critical fields up to 3 T. Top-down lithography allows complex geometries, branched structures, and straightforward scaling to multicomponent devices compared to structures made from assembled nanowires.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.119.176805

Authors: H. J. Suominen, M. Kjaergaard, A. R. Hamilton, J. Shabani, C. J. Palmstrøm, C. M. Marcus, F. Nichele

Institutions: University of Copenhagen, UNSW Sydney, California NanoSystems Institute, University of California, Santa Barbara, New York University

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Danmarks Grundforskningsfond

OpenAlex ID: W2603129378

FWCI: 15.1

Cites: 27

Cited by: 237

Related to: 10