3 papers
cond-mat.supr-con2025
Strain-induced Berry phase in chiral superconductors
Canon Sun, Marcel Franz, Joseph Maciejko
We study the topology of the order parameter in the intermediate phase between the superconducting and time-reversal symmetry breaking transitions of a superconductor un…
cond-mat.supr-con2025
Family of multilayer graphene superconductors with tunable chirality: Momentum-space vortices nucleated by a ring of Berry curvature
Adarsh S. Patri, Marcel Franz
Recent experiments in rhombohedrally-stacked multilayer graphene heterostructures have reported signatures of chiral superconductivity, emerging from a spin and valley-polarized no…
cond-mat.mes-hall2024
Light-element and purely charge-based topological materials
Nassim Derriche, Marcel Franz, George Sawatzky
We examine a class of Hamiltonians characterized by interatomic, interorbital even-odd parity hybridization as a model for a family of topological insulators without the need for s…