Novel Quantum Phases at Interfaces
Abstract
In this project we studied topological phases at transition metal oxide interfaces. Over the course of the 5-year project, a fairly detailed understanding of these systems was acquired. By using a combination of model Hamiltonian studies and first-principles calculations, we made a number of predictions for specific material systems that might exhibit topological phases, with the most promising candidate being the zero magnetic field quantum Hall state known as a Chern insulator or quantum anomalous Hall state. [111] grown thin films of LaNiO3 and Y2Ir2O7 may support this phase under the right conditions (which appear to be close to current experimental conditions). The main technological advantage of this topological phase is that its one-dimensional edge state allows for dissipationless current flow, and can be used for low-power electronics, potentially at room temperature (which a superconductor cannot do).
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 2014
- Accession Number
- ADA622929
Entities
People
- Gregory A. Fiete
Organizations
- University of Texas at Austin