Special Condensed-Matter Seminar:"GRAPHENE PHYSICS IN GRAPHITE"

Tue, 18/02/2020 - 12:00 to 13:30

Danciger B building, Seminar room
Lecturer: YakovKopelevich, TheState University of Campinas (UNICAMP, Brazil)
It has been recognized long ago, and more recently confirmed experimentally,thatpeculiarity of electrons in graphite monolayer (graphene) is related to theparticular linear spectrum of charge carriers expanding in a vicinity of thecorner point K of the hexagonal Brillouin zone (BZ), similar to the conicaldispersion of massless Dirac Fermions (DF) in 2D Quantum Electrodynamics.Because a real bulk graphite always contains nearly decoupled and misorientedgraphiticplanes, some of fundamental physical properties of N-layer (N = 1,2,3,…) graphenehave been experimentally uncovered in bulk graphite prior and after experimentsperformed on graphene.In this presentationwe give a comparative analysis ofcommon physical properties found in graphite and N-layer graphene, focusing onthe phenomena such as superconductivity, ferromagnetism, integer and fractionalquantum Hall effects, discovered in these systems during the last ~ 20 years.