PIRSA:13010113

Searching for topological phases in transition metal oxide heterostructures

Ran, Y. (2013). Searching for topological phases in transition metal oxide heterostructures. Perimeter Institute. https://pirsa.org/13010113

Ran, Ying. Searching for topological phases in transition metal oxide heterostructures. Perimeter Institute, Jan. 31, 2013, https://pirsa.org/13010113 

          @misc{ pirsa_PIRSA:13010113,
            doi = {10.48660/13010113},
            url = {https://pirsa.org/13010113},
            author = {Ran, Ying},
            keywords = {Condensed Matter},
            language = {en},
            title = {Searching for topological phases in transition metal oxide heterostructures},
            publisher = {Perimeter Institute},
            year = {2013},
            month = {jan},
            note = {PIRSA:13010113 see, \url{https://pirsa.org}}
          }

Ying Ran Boston College

DOI 10.48660/13010113
Collection
Talk Type Scientific Series
Subject

Abstract

In this talk I will present our recent investigations on possible topological phases in (111) heterostructures of transition metal oxide. These (111) heterstructures are promising systems to realize many 2D topological phases at high temperatures, even with strong correlations, which is hard to be achieved in conventional materials. Several examples will be discussed, including high-temperature quantum spin hall effect in LaAlO3/LaAuO3/LaAlO3 bilayer, correlation induced topological phases in LaAlO3/LaNiO3/LaAlO3 multilayer, nearly flat topological band with C=2 (C: Chern number) in SrIrO3 trilayer, and abelian/nonabelian fractional quantum hall effects in the absence of Landau levels (fractional Chern insulators). If time is allowed, I will also briefly introduce our work on classifying wavefunctions of fractional Chern/topological insulators.