Shopping cart


Harold Baranger (Duke University)

Date: Mon. April 19th, 2021, 12:45 pm-1:45 pm
Location: Zoom (ID: 92282831982 Passcode: 373289)

Quantum Hall Meets Superconductivity: Interference of Chiral Andreev Edge States

Harold Baranger, Department of Physics, Duke University

Youtube video

Abstract.— The boundaries between distinct quantum states have attracted increasing interest as a setting for novel topological and correlated phenomena. I will discuss our work on the interface between two prototypical phases of electronic matter with conceptually different ground states: the integer quantum Hall insulator and the s-wave superconductor. Hybridized electron-hole states called “chiral Andreev edge states” propagate along this interface in the direction determined by the magnetic field. Interference between these states can turn an incoming electron into an outgoing electron or hole, depending on the phase accumulated along the interface. I shall present experimental results from the group of my colleague Gleb Finkelstein as well as our theoretical understanding backed up by numerical calculations.

Host: Harsh Mathur

Scroll To Top