Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-06-24
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
We examine transport and microwave properties of two coupled quantum dots taken in parallel connection to the common left lead and connected to separate leads at their right side. In addition, the area between the left lead and the double-dot structure is threaded by Aharonov-Bohm magnetic flux. We determine the energies and populations of double-dot levels on the microscopic basis taking into account the interdot Coulomb interaction and show that at large lead-to-lead bias the population inversion can be achieved. For the case of strong Coulomb repulsion, this inversion leads to level crossing accompanied by the region of negative differential conductivity in the current-voltage characteristics, whereas for weaker Coulomb repulsion, the resonant microwave absorption becomes negative at high lead-to-lead voltage.
Murokh Lev G.
Smirnov Anatoly Yu.
No associations
LandOfFree
Negative differential conductivity and population inversion in the double-dot system connected to three terminals 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 Negative differential conductivity and population inversion in the double-dot system connected to three terminals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Negative differential conductivity and population inversion in the double-dot system connected to three terminals will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-101333