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Institute for Condensed Matter Theory Seminar: "Flavor Ferromagnetism and Superconductivity in Graphene Multilayers"

Event Type
Seminar/Symposium
Sponsor
The Institute for Condensed Matter Theory
Virtual
wifi event
Date
Jan 24, 2022   12:00 pm  
Speaker
A.H. MacDonald, Physics Department, University of Texas at Austin
Contact
Janice Benner
E-Mail
jbenner@illinois.edu
Views
21
Originating Calendar
Physics - Institute for Condensed Matter Theory Seminar

Band states in graphene multilayers have a 4-fold spin x valley flavor degeneracy.  Recent experiments have demonstrated that ground states that break flavor degeneracy without breaking translational symmetry are common in the absence of a magnetic field when correlations are strong, just as they are in the quantum Hall regime.  I will discuss properties of these flavor ferromagnets, commenting on the Fermi surface reconstructions and soft collective modes that they produce, and on the relationship to superconductivity

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