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Condensed Matter Seminars

ics Condensed Matter
Thursday, October 4, 2007
4:00 PM
Physics Building, Room 204
Note special time.
Note special room.
Igor Mazin [Host: Seung-Hun Lee]
Naval Research Laboratory
"Superconductivity in graphene-based structures"
 
 Slideshow (PDF)
ABSTRACT:
MgB2 and CaC6 are some of the most interesting new stars on the superconducting skies. The former, with Tc=39K is the most high-temperature conventional superconductor, and it is by far superior technologically to the cuprate-base high-Tc materials. The latter has Tc >13K, nearly an order of magnitude higher than that of old intercalated graphites. Theory says that despite both materials being, essentially, doped graphenes, superconductivity comes from two different bands, one existing in MgB2 but not in CaC6 and the other in CaC6 but not in MgB2. In this talk I will explain what are this bands and why they are responsible for superconductivity in the respective compounds, and will discuss whether or not it is possible to invent a new material that would combine superconducting advantages of both.
SLIDESHOW:

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