Topological electronic phases in hybrid superconductor - quantum Hall effect structures
Abstract
The discovery and control of novel topological excitations in condensed matter systems has the potential to revolutionize both electronics and quantum computation. These quasiparticles, which include chiral Majorana modes and non-abelian anyons, have topological properties that protect them against perturbations from the environment. A novel promising route for creating topological excitations is to combine superconductivity and the quantum Hall effect. In this project, we explore the behavior of quantum Hall edge states as they propagate along the interface of a type II superconductor, such as Molybdenum Rhenium or Niobium nitride. The quantum Hall effect is induced in graphene encapsulated in boron nitride, at sufficiently low field for superconducting correlations to persist. We investigate several device geometries to shed light on the microscopic mechanisms allowing the coupling of electron and hole edge states at the superconducting interface.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 08, 2019
- Source ID
- W911NF1610132
Entities
People
- François Amet
Organizations
- Appalachian State University
- Army Contracting Command
- United States Army