Northwestern Events Calendar

May
24
2018

Professor Arun Paramekanti: Oxide heterostructures - Quantum anomalous Hall insulators and Bogoliubov Landau levels

When: Thursday, May 24, 2018
4:00 PM - 5:30 PM CT

Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Public - Post Docs/Docs - Graduate Students

Contact: Cristian Pennington  

Group: Physics and Astronomy Condensed Matter Physics Seminars

Category: Academic

Description:

Professor Arun Paramekanti, University of Toronto

Title: Oxide heterostructures - Quantum anomalous Hall insulators and Bogoliubov Landau levels

Abstract: Recent progress in making oxide interfaces and heterostructures, and in tuning their properties with strain, has led to an interest in understanding how one might realize topological phases or flat bands in such systems. I will discuss our theoretical work in this area, focussing on two aspects. For mixed oxide 2DEGs comprised of local moments coupled to a "conduction fluid" of electrons with strong spin-orbit coupling, we show that ferromagnetism, an orbital analogue of the Rashba effect, and atomic spin-orbit coupling can conspire to lead to high temperature quantum anomalous Hall insulators. I will also discuss a different setting in which strain in Dirac materials acts as a pseudo-gauge field. This provides a way to realize Landau-like levels of Bogoliubov quasiparticles in high Tc d-wave superconducting oxides.

Host: Venkat Chandrasekhar

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