College of Science

Seminar: Claudia Ojeda [CSULB]

Graphene and Van der Waals heterostructures: electronic transport and angle resolved photoemission spectroscopy

Nov 3, 2016 11:00 AM to Nov 3, 2016 12:00 PM at Building 8 - Room 241

Graphene, the one atom thick layer of carbon, has opened a fruitful field of research in condensed matter physics. Even today, more than ten years after its discovery, graphene produces approximately ten thousand papers per year. Having reached a suitable understanding of graphene’s fundamental properties and applications, scientists are now turning their attention to structures composed of different 2D crystals. Significant effort has been put into the production of 2D crystals other than graphene, ranging from thin insulators (like hexagonal boron nitride) to thin semiconductors (like molybdenum disulfide) and thin topological insulators, an exotic state of matter. Combination of these materials into structures named van der Waals heterostructures could allow for the engineering of tunable phenomena at the interface.

In this talk, I will give an introduction to the Physics of graphene and will discuss preliminary electronic transport measurements on novel thin strongly correlated materials, Na2IrO3 and RuCl3. I will present the technique of ARPES (angle resolved photoemission spectroscopy) and it’s utility to tailor van der Waals heterostructures in-situ. Exciting preliminary results on a C60/Bi2Se3 heterostructure will be shown. 

10:50 a.m. Refreshments

11:00 a.m. Seminar

Building 8 - Room 241

For further information, please call (909) 869-4014