Disorder-Induced Topological Phase Transition In Integer Quantum Hall Effect

by Mrs. Emuna Rimon

Physics department, BGU

at Condensed Matter Seminar

Mon, 01 Jul 2024, 11:40
Sacta-Rashi Building for Physics (54), room 207

Abstract

In this talk, I will introduce the Integer Quantum Hall Effect, focusing on the topological invariants associated with the Hall conductivity and the role of disorder in this phenomenon. I will discuss the disorder-induced phase transition, and the potential mechanisms at play. Additionally, I will present results from calculations of conductivity, the Thouless-Kohmoto-Nightingale-den Nijs (TKNN) invariant, and localization length. My aim is to understand whether the system remains insensitive to changes in boundary conditions across the phase transition, thereby testing the validity of the TKNN invariant in this context.

Created on 30-06-2024 by Naamneh, Muntaser (mnaamneh)
Updaded on 01-07-2024 by Bar Lev, Yevgeny (ybarlev)