QDev Seminar: Anton Akhmerov

Title: On graphene, mirrors, and smoke.

Abstract: The mirror surface reflects incoming light specularly despite not being atomically flat. This happens the waves are not sensitive to the disorder that exists on scales shorter than the wave length, by effectively averaging it out. Much to our surprise, when analyzing the reflection of electrons from a graphene boundary we have discovered that it breaks the law of reflection and remains diffusive even when the wave length becomes arbitrarily large. In the talk I will explain under which conditions this happens, what is the reason for this breakdown of the law of reflection, and propose an experimental setup allowing to observe it.