Colloquium

Electrostatic Doping of New Materials: Challenges, Opportunities and First Accomplishments

Dimitri Basov
University of California, San Diego
Wednesday, April 25, 2007
Higgins 310, 4 pm

One focus of contemporary condensed matter physics is on exploring novel electronic and magnetic effects prompted by introducing a high density of mobile charges in an insulating host usually via chemical doping. Electrostatic doping that can be realized by integrating a host material of interest in an architecture of a field effect transistor offers an appealing alternative. Indeed, the electrostatic modulation of carrier density is reversible and it does not introduce disorder inevitable in chemically doped substances. I will overview recent progress with this challenging endeavor and will describe advances in the understanding of intrinsic transport properties of organic semiconductors enabled by the electrostatic doping of high quality organic molecular crystals.