Probing Electron Nematicity in Multilayer Graphene Heterostructures
Abstract
The proposed research effort aims to unravel the nature of electron nematicity in multi-layer graphene heterostructures. By combining experimental characterization and ab initio simulation, we will establish a balanced experimental and theoretical method to determine the nature of electronic nematic phases in multilayer graphene heterostructures. such as Bernal-stacked bilayer graphene and magic-angle graphene moire systems. We will uncover the connection between nematicity and other emergent phenomena, such as superconductivity and orbital ferromagnetism. The research effort has three main foci- 1. First, we will investigate the interplay between electron anisotropy and other Coulomb-driven instabilities. This effort will provide an unambiguous answer to the open question regarding the origin of electron anisotropy in a solid state sample and the potential influence of strain. We will also characterize the stability of electron anisotropy against proximity Coulomb screening. This will allow us to determine how Coulomb interactions give rise to anisotropy. 2. Secondly, we will identify the connection between electron nematicity and other emergent phenomena. We will achieve this goal by characterizing the angular symmetry of the superconducting and ferromagnetic phases. 3. Last but not least, we will study the underlying electronic origin of the electron nematic in multilayer graphene via ab initio simulations that will account for material-specific electron-electron interactions.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 06, 2024
- Source ID
- FA95502310482
Entities
People
- Jia Li
Organizations
- Air Force Office of Scientific Research
- Brown University
- Office of the Secretary of Defense