Quantum Matter Seminar- Gleb Finkelstein- Chiral Andreev Edge States in the Quantum Hall Regime

Photo of Gleb Finkelstein with trees in distance
October 9, 2023
10:00AM - 11:30AM
1080 Physics Research Building

Date Range
Add to Calendar 2023-10-09 10:00:00 2023-10-09 11:30:00 Quantum Matter Seminar- Gleb Finkelstein- Chiral Andreev Edge States in the Quantum Hall Regime Professor Gleb Finkelstein Duke University Chiral Andreev Edge States in the Quantum Hall Regime Location: 1080 Physics Research Building, Smith Seminar Room Faculty Host: Jeanie Lau 1080 Physics Research Building Department of Physics physics@osu.edu America/New_York public

Professor Gleb Finkelstein

Duke University

Chiral Andreev Edge States in the Quantum Hall Regime

Location: 1080 Physics Research Building, Smith Seminar Room

Faculty Host: Jeanie Lau

Photo of Gleb Finkelstein with trees in distance

Abstract: We explore graphene samples in a contact with a type II superconductor at high magnetic fields. In the quantum Hall regime, we observe signatures of the chiral Andreev edge states (CAES) formed along the interface with the superconductor. These single particle states consist of electrons and holes hybridized in a fashion similar to Majorana fermions. Qualitatively, the CAES can be visualized as a result of multiple Andreev reflections of a single electron/hole skipping along the superconducting interface. In our experiment, the signatures of the CAES are found to be sensitive to the configuration of vortices in the superconductor, which may determine their loss and decoherence.
 

Profile information:
https://scholars.duke.edu/person/gleb.finkelstein

 

 

 

Students and postdocs are invited to stay and chat with the speaker from 11:30-12:00.