Electronic properties of graphene multilayers

Note: Special Condensed Matter Seminar/ Special Day & Time
Speaker: Mikito Koshino, Columbia University, Tokyo Inst. of Technology
When: February 12, 2008 (Tue), 12:00PM to 01:00PM
Hosted by: Antonio Castro Neto

This event is part of the Condensed Matter Seminar Series. All seminars will take place in the Metcalf Science Center, Room 352 at noon, unless otherwise noted

Abstract: The optical and magnetic properties of multilayer graphenes
are theoretically studied within the effective mass approximation.
We show that the Hamiltonian of a multilayer graphene with any numbers
of layers can be decomposed into sub-components effectively identical to
monolayer or bilayer graphene, allowing us to understand the electronic
structure systematically. Based on this decomposition, we studied
the optical absorption and the orbital diamagnetism. We propose a possibility
of observing the monolayer-like spectrum in the magneto-optical absorption,
even in a mixture of multilayer graphene films with various numbers of layers.