Engineering topological excitations in twisted bilayer graphene
Abstract
Twisted bilayer graphene (TBG), with rotational misalignment of 1.1 degrees, hosts numerous superconducting and correlated-insulating electronic phases. This project plans to use the rich phase diagram of TBG for exploring properties of electrostatically defined boundary modes in this and related strongly correlated electronic systems. The long-term goal of this research line is to establish a platform that will allow for creating topologically protected Majorana zero modes that are expected to localize at the edges of a one-dimensional (1D) topological superconductor. In this context, TBG possibly offers unprecedented advantages compared to other Majorana platforms, as it allows for tuning between insulating, metallic, and superconducting phases, as well as creating boundaries between them, simply by locally controlling the electronic doping. Using scanning tunneling microscopy and transport measurements, we aim to develop experimental protocols to detect unambiguous signatures of Majorana modes in this system and probe their basic properties.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 09, 2021
- Source ID
- N000142112635
Entities
People
- Stevan Nadj-Perge
Organizations
- California Institute of Technology
- Office of Naval Research
- United States Navy