title: Evidence for Klein tunneling in graphene p-n junctions.
abstract: Transport through potential barriers in graphene is investigated using a set of metallic gates capacitively coupled to graphene to modulate the potential landscape. When a gate-induced potential step is steep enough, disorder becomes less important and the resistance across the step is in quantitative agreement with predictions of Klein tunneling of Dirac fermions up to a small correction. We also perform magnetoresistance measurements at low magnetic fields and compare them to recent predictions.
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: N
authors.initials: N
authors.lastname: Stander
authors.forename: B
authors.initials: B
authors.lastname: Huard
authors.forename: D
authors.initials: D
authors.lastname: Goldhaber-Gordon