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LASSP & AEP Seminar by Gleb Finkelstein (Duke University)
Tuesday, September 6, 2022 at 12:20pm
Clark Hall, 700 Central Campus, 142 Sciences Drive
Gleb Finkelstein
Professor of Physics
Duke University
"Chiral Andreev edge states in the quantum Hall regime"
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.
Hosted by Valla Fatemi and Katja Nowak
NEW this semester: FREE PIZZA served starting at 12:10 p.m.!
Please bring your own beverage
Zoom livestream will not be available for this talk
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Free
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Lynn Lauper
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607-255-3591
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