Ordering effect of Coulomb interaction in ballistic double-ring systems

Details Ordering effect of Coulomb interaction in ballistic double-ring systems Ordering effect of Coulomb interaction in ballistic double-ring systems

1996-12-23

arxiv.org/abs/cond-mat/9612200v2

Solid State Commun. 104, 75 (1997)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 eps figures, revised text and new figures (as published)

Scientific paper

10.1016/S0038-1098(97)00310-4

We study a model of two concentric onedimensional rings with incommensurate areas $A_1$ and $A_2$, in a constant magnetic field. The two rings are coupled by a nonhomogeneous inter-ring tunneling amplitude, which makes the one-particle spectrum chaotic. For noninteracting particles the energy of the many-body ground state and the first excited state exhibit random fluctuations characterized by the Wigner-Dyson statistics. In contrast, we show that the electron-electron interaction orders the magnetic field dependence of these quantities, forcing them to become periodic functions, with period $ \propto 1/(A_1 + A_2)$. In such a strongly correlated system the only possible source of disorder comes from charge fluctuations, which can be controlled by a tunable inter-ring gate voltage.

Affiliated with

Also associated with

No associations

Rating

Ordering effect of Coulomb interaction in ballistic double-ring systems 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 Ordering effect of Coulomb interaction in ballistic double-ring systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ordering effect of Coulomb interaction in ballistic double-ring systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-324943