Magnetoelectrics and Spinorbitronics in Topological Heterostructures and Superlattices
Abstract
The objective of the proposed research is, through theory and experiment, to achieve atomic level understanding of interfacial spin-orbit-coupling (SOC) and exchange coupling of magnetic topological insulator (TI) heterostructures and superlattices and to discover new phenomena that are critical not only for fundamental science but also for enabling energy efficient DoDÕs applications such as spintronics. In particular, the research will strive to uncover new physics emerging from: (1) the interplay of topological surface states of TIs with ferromagnets (FMs) and anti-ferromagnets (AFMs); (2) topological valley coupling as well as nanostructure-created pseudo local magnetic field in graphene and other 2D materials when coupled with TIs; (3) axion electrodynamics and emerging physics in TI-based heterostructures. The proposed research will plan to: (1) engineer strongly SOC materials by growing several different kinds of heterostructures and superlattices containing TI/nonTI, TI/AFM, TI/FM and TI/TMD interfaces in various combinations; (2) pattern the films into various structures to explore the SOC-enabled new physics and effects. The proposed research activities will be organized into 4 thrusts around SOC materials: (1) Synthesizing and patterning SOC heterostructures and superlattices using TI/nonTI and 2D materials; (2) Spin textures, spin-orbit torques and THz spin-dynamics; (3) Spin-valley- tronics; (4) Axion electrodynamics & other emerging physics and devices.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 18, 2017
- Source ID
- W911NF1610472
Entities
People
- Kang L. Wang
Organizations
- Army Contracting Command
- United States Army
- University of California, Los Angeles