Condensed Matter Seminar

Robert Konik
Brookhaven National Laboratory

Thursday, March 2, 2006
1:00 pm in SPL 52

Kondo Physics and Interference Effects in Quantum Dot Structures

Abstract: Quantum dots offer a highly engineered, highly tunable environment in which to realize strongly correlated, non-perturbative physics. In particular they offer the opportunity to realize Kondo-like behaviour in new ways. I will consider two examples of this type of physics. In the first I will consider quantum dot configurations possessing two interfering tunneling paths. This can be concretely realized by embedding a quantum dot in an Aharonov-Bohm ring. In the second case I will consider a pair of double quantum dot systems. In both cases a simplified Anderson-like model describing the dots can be argued to be exactly solvable. With this exact solvability, I am able to describe the strongly coupled transport properties of these systems.