Coulomb blockade and Kondo effect in quantum dots

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A tutorial article for the Proceedings of the NATO-ASI "New Directions in Mesoscopic Physics" (Erice, 2002)

Scientific paper

We review the mechanisms of low-temperature electron transport across a quantum dot weakly coupled to two conducting leads. Conduction in this case is controlled by the interaction between electrons. At temperatures moderately lower than the single-electron charging energy of the dot, the linear conductance is suppressed by the Coulomb blockade. Upon further lowering of the temperature, however, the conductance may start to increase again due to the Kondo effect. This increase occurs only if the dot has a non-zero spin S. We concentrate on the simplest case of S=1/2, and discuss the conductance across the dot in a broad temperature range, which includes the Kondo temperature. Temperature dependence of the linear conductance in the Kondo regime is discussed in detail. We also consider a simple (but realistic) limit in which the differential conductance at a finite bias can be fully investigated.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Coulomb blockade and Kondo effect in quantum dots does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Coulomb blockade and Kondo effect in quantum dots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coulomb blockade and Kondo effect in quantum dots will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-53651

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.