Events in Physics
Wednesday, July 01, 2015
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Bound state in the continuum and Dirac like fermions in graphene-based structuresProf. Pedro Orellana, Department of Physics, Universidad Federico Santa Maria, Valparaiso, Chile PS017a, 10-11am Title: Bound state in the continuum and Dirac like fermions in graphene-based structures Abstract: In this talk, we discuss the formation of bound states in the continuum for Dirac-like fermions in structures composed by a trilayer graphene flake connected to nanoribbon leads. The existence of this kind of localized states can be proved by combining local density of states and electronic conductance calculations. By applying a gate voltage, the bound states couple to the continuum, yielding a maximum in the electronic transmission. This feature can be exploited to identify bound states in the continuum in graphene-based structures. |
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Andrew King (Leicester)PS1.28From quasars to ULXs: how black holes affect their surroundings The enormous energy released as a black hole grows its mass can have a determining effect on its environment. The scaling relations between supermassive black holes and host galaxy bulges give a clear indication of this. In small galaxies, stellar-mass black hole accretion can produce radical changes. The past decade has seen major progress in understanding these effects. I will describe this, and what we hope to learn in the future.
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