CPM Seminar

Electrons in Graphene: Particles with SU(4) symmetry

Amir Yacoby

Department of Physics
Harvard University

Interactions among electrons can give rise to striking collective phenomena. Examples include magnetism and integer and fractional quantum Hall effect where correlations between electrons generate spontaneously symmetry breaking and excitations with fractional charge.

Single and bilayer graphene provides a new platform to study many-body effects due to the relativistic nature of their charge carriers and the underlying SU(4) symmetry of the particles that arises from the electron~Rs spin and valley degrees of freedom. In this talk I will discuss some of the unique manifestations of this SU(4) symmetry to correlated electron phenomena in graphene.