COHERENT TRANSPORT OF ENERGY AND INFORMATION IN 2D SUPERATOMIC CRYSTALS
Abstract
In this grant we will engineer quantum properties in two-dimensional (2D) superatomic materials, a new class of ultra-manipulable and hierarchical systems whose functional building blocks can be individually addressed to tune their properties. We will investigate the unique properties of 2D superatomic materials and develop methods to tune their electronic structures, magnetic properties, and vibrational properties. We will develop techniques to deterministically dope or functionalize the surfaces of 2D superatomic materials with high positional precision reaching atomic-level control. We will control the dimensionality and strain in 2D superatomic materials to realize massive changes in their inter-superatom electronic, vibrational, and magnetic coupling. Furthermore, we will functionalize the surface of 2D superatomic materials with molecules that will direct the assembly of new moiré lattices with predictable and uniform twist angles as a platform for studying chirality induced spin selection. We will utilize designer 2D superatomic materials to achieve coherent and directional transport of electrons and excitons (electron-hole pairs) by making these electronic excitations ‘surf’ on optically-generated coherent phonons that propagate as waves. 2D superatomic materials support exceptionally strong coupling between phonons and electronic quasiparticles, far beyond traditional atomic semiconductors. This strong coupling will help sustain wavelike transport of electronic excitations over macroscopic distances. We will develop superatom-based quantum materials for coherent magnons. We will study the 2D C60 frameworks, which can be exfoliated down to the monolayer limit and stacked with 2D magnetic materials. We will create and study 2D superatomic magnetic semiconductors with large magnetic moment on each superatom, tunable intersuperatom exchange coupling for magnetic order, and controlled electronic band formation from linking chemistry and symmetry. Using this approach, we will tune the spin waves to be in resonance with those of interesting qubits for strong coupling and remote entanglement.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 20, 2023
- Source ID
- FA95502210389
Entities
People
- Colin Nuckolls
Organizations
- Air Force Office of Scientific Research
- Trustees of Columbia University in the City of New York
- United States Air Force