Many-Body Physics in Two Dimensional Moire Materials
Abstract
Two-dimensional moir´e materials are an emergent platform to explore new quantum states of matter. The precise control of the mismatch angle between two atomically thin layers and the Fermi level can give rise to strongly correlated systems. Recently, twisted bilayers of graphene and transition metal dichalcogenides from group VI show strongly correlated states. However, the question remains if the 2D moir´e materials of group V could present many-body physics and which are the roles of phonons in that states. Our objective is to investigate charge density waves, superconductivity, Mott insulator, and Wigner crystals in moir´e materials of NbSe2 varying the angle of mismatch and Fermi level. Low-temperature terahertz Raman spectroscopy is an innovative way to probe these quantum states optically. Our general strategy is to exfoliate monolayers of NbSe2, stack two monolayers controlling the mismatch angle onto electrical contacts, measure terahertz Raman, and transport devices at low temperatures. This study is critical because it can open up windows for control and optically probe strongly correlated states in 2D moir e materials.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 06, 2024
- Source ID
- FA95502310329
Entities
People
- Victor Carozo Gois De Oliveira
Organizations
- Air Force Office of Scientific Research
- United States Air Force