Beating Fabry-Pérot interference pattern in a magnonic scattering junction in the graphene quantum Hall ferromagnet

Jonathan Atteia, Preden Roulleau, Mark O. Goerbig

At filling factor $\hat{I}½=0,\pm 1$, the ground state of graphene is a particular SU(4) ferromagnet which hosts a rich phase diagram along with several spin, pseudospin or "entanglement"…