Establishing the Platform of Quasi-one-dimensional Topological Insulators with Emergent Functionalities

Project Personnel

Chun Ning Lau

Principal Investigator

Ohio State University

Email

Fan Zhang

University of Texas, Dallas

Email

Ming Yi

William Marsh Rice University

Email

Bing Lv

University of Texas, Dallas

Email

Robert Birgeneau

University of California, Berkeley

Email

Funding Divisions

Division of Materials Research (DMR), Office of Multidisciplinary Activities (OMA)

This program aims at addressing some of the major challenges facing three-dimensional (3D) and 2D topological insulators (TIs), by establishing the physics platform and materials database of various quasi-1D topological materials with emergent functionalities. Our goals are: (1). design and optimization of quasi-1D TI candidates; (2). synthesis and characterization of the materials; (3). demonstration of phase transitions between different topological phases by strain and/or temperature; (4). the search for 2D TIs in atomically thin layers of quasi-1D materials. 

Synergistic and iterative collaborations have been established among the five team members with strong and diverse expertise in theory and computation, materials synthesis, spin- and angle- resolved photoemission spectroscopy, nanofabrication and quantum transport, and neutron and x-ray scattering. Successful implementation of the program will actualize the potentials offered by quasi-1D materials in the realization and discovery of a variety of topological quantum phases including tuning their topological phase transitions. These advances will ultimately pave the way for the realization of fault-tolerant quantum computing and novel spintronic devices for next-generation information technology.