Prediction of Ferromagnetic Correlations in Coupled Double-Level Quantum Dots

Details Prediction of Ferromagnetic Correlations in Coupled Double-Level Quantum Dots Prediction of Ferromagnetic Correlations in Coupled Double-Level Quantum Dots

2004-07-05

arxiv.org/abs/cond-mat/0407109v2

Physical Review Letters 94, 026804 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 6 figures, Fig 6 was removed, introduction was extended

Scientific paper

10.1103/PhysRevLett.94.026804

Numerical results are presented for transport properties of two coupled double-level quantum dots. The results strongly suggest that under appropriate circumstances the dots can develop a novel ferromagnetic (FM) correlation at quarter-filling (one electron per dot). In the strong coupling regime (Coulomb repulsion larger than electron hopping) and with the inter-dot tunneling larger than the tunneling to the leads, an S=1 Kondo resonance develops in the density of states, leading to a peak in the conductance. A qualitative 'phase diagram', incorporating the new FM phase, is presented. It is also shown that the conditions necessary for the FM regime are less restrictive than naively believed, leading to its possible experimental observation in real quantum dots.

Affiliated with

Also associated with

No associations

Rating

Prediction of Ferromagnetic Correlations in Coupled Double-Level 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 Prediction of Ferromagnetic Correlations in Coupled Double-Level Quantum Dots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prediction of Ferromagnetic Correlations in Coupled Double-Level Quantum Dots will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-72672