CORRELATED TOPOLOGICAL MATERIALS
Abstract
Statement of WorkMap Fermi surface topology of 2D materials with angular dependent quantum oscillations.Uncover electronic Berry phase with intense field Landau-level indexing.Measure electronic mobility in topological materials.Engineer electronic band structure with doping or interface strain.ApproachSimilar to the topological Kondo insulator, a number of interesting novel topological phases andphenomena are predicted to arise due to strong interactions in f-electron or d-electron based 2Dmaterials. Examples include the topological Mott insulator, the quantum spin Hall effect, theWeyl semimetal, and many others. The challenge is how to characterize the materials to resolvethe physical signatures of the interaction-driven topological phases. We propose to solve theproblem by conducting quantum oscillation experiments and angular magnetoconductanceresearch to map the electronic states of the correlated topological phases. Integrating advancedexperimental tools, such as torque magnetometry, Nernst effect and angular magnetoconductance, we aim to investigate the electronic states of the interaction-driven topological materials.ObjectiveThe object of this proposed project is to investigate the physical signatures of interaction-driventopological phases in 2D materials, particularly in f-electron heavy fermion materials, and d-electrontransition metal oxides.Overall Merit and ONR Mission/Relevance:This is an excellent proposal that is likely to result in important advances in the understanding of topological phases. The results could lead to electronics that combine high speed and extremely low power consumption (useful in a variety of applications of interest to the Department of the Navy), as well as other applications that we cannot yet envision. The PI has a very impressive track record, with seminal contributions during his time as a graduate student, post-doc, and assistant professor.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 25, 2017
- Source ID
- N000141512382
Entities
People
- Lu Li
Organizations
- Board of Regents of the University of Michigan
- Office of Naval Research
- United States Navy