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Electrostatic Screening In Nanostructures
April 17, 20154:00 pm – 5:00 pm (CDT)

Electrostatic Screening In Nanostructures


Alexander Chaplik (Institute of Semiconductor Physics, Novosibirsk, Russia)


V. Pokrovsky



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

Part 1.
Screening by charged fermions ( electrons). Nanotubes, double quantum wells, multilayer superlattices. Matrix dielectric functions.

Part 2.
Screening by neutral bosons (spatially indirect dipolar excitons). It will be shown that screening of a Coulomb impurity center by bosons depends much stronger on the concentration than in the Fermi case. The screening changes drastically when the dipolar excitons form the Bose-Einstein condencate. This results from the Gross-Pitaevsky equation.

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