Emergent Phenomena via Magnetism and Topology
Abstract
We propose to develop a new class of topological materials based on oxide-chalcogenide interfaces that will enable robust information propagation free from external perturbations. This information propagation will exploit emergent phenomena arising from the interaction of long range magnetic order and topological phenomena, taking the form of dissipation-less conduction of electrons or propagation of topological spin textures. Information technology is subject to losses that ultimately limit energy efficiency and speed. Dissipation-less conduction at elevated temperatures will vastly improve energy efficiency of existing microelectronics but also overcome issues associated with miniaturization and improve response times. Topological protection from electron backscattering can provide a viable route to dissipation-less conduction that is symmetry protected and therefore robust to disorder. More specifically we will seek to stabilize magnetic proximity effects and Dzyaloshinskii-Moriya interactions at the interface between low loss oxide ferromagnets and strongly spin-orbit coupled topological insulators in an effort to stabilize emergent phenomena promoting dissipationless conduction or topological magnetic texture. In order to achieve our main research objective of developing a new class of topological materials that enable robust information propagation free from external perturbations, we will synthesize and characterize oxide-chalcogenide interfaces with minimal interfacial disorder- 1. to explore possible magnetic proximity effects in known topological insulators and thereby stabilize chiral edge state conduction. 2. to generate topological magnetic texture in the form of magnetic skyrmions as a vehicle for the propagation of information.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 06, 2024
- Source ID
- FA95502310344
Entities
People
- Yuri Suzuki
Organizations
- Air Force Office of Scientific Research
- Stanford University
- United States Air Force