Kagome bilayer inter-metallic systems as a platform for realising novel electronic phases.

Seminar

QUEST Center event

No

Speaker

Aabhaas Vineet Mallik

Date

18/11/2021 - 15:30 - 14:30Add to Calendar 2021-11-18 14:30:00 2021-11-18 15:30:00 Kagome bilayer inter-metallic systems as a platform for realising novel electronic phases. Inspired by the first principles results for a bilayer Fe3Sn2 [PRL 125, 026401 (2020)] we obtain low energy tight binding models for this class of materials and show that symmetry considerations generally allow for a low energy isolated band which may acquire a non-zero Chern number. We then introduce short ranged interactions in these models and use exact diagonalization and field theoretic arguments to demonstrate the possibility of realizing exotic phases of electrons like the fractional Chern insulator and spin liquid phases. zoom link Resnick conference room on the 0th floor Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public

Place

Resnick conference room on the 0th floor

Abstract

Inspired by the first principles results for a bilayer Fe3Sn2 [PRL 125, 026401 (2020)] we obtain low energy tight binding models for this class of materials and show that symmetry considerations generally allow for a low energy isolated band which may acquire a non-zero Chern number. We then introduce short ranged interactions in these models and use exact diagonalization and field theoretic arguments to demonstrate the possibility of realizing exotic phases of electrons like the fractional Chern insulator and spin liquid phases.

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