Polarization transitions in quantum ring arrays

Details Polarization transitions in quantum ring arrays Polarization transitions in quantum ring arrays

2003-12-05

arxiv.org/abs/cond-mat/0312173v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4.5 pages (double column) with 4 figures

Scientific paper

We calculate the zero temperature electrostatic properties of charged one and two dimensional arrays of rings, in the classical and quantum limits. Each ring is assumed to be an ideal ring of negligible width, with exactly one electron on the ring that interacts only with nearest neighbor rings. In the classical limit we find that if the electron is treated as a point particle, the 1D array of rings can be mapped to an Ising antiferromagnet, while the 2D array groundstate is a four-fold degenerate "stripe" phase. In contrast, if we treat the electrical charge as a continuous fluid, the distribution will not spontaneously break symmetry, but will develop a charge distribution reflecting the symmetry of the array. In the quantum limit, the competition between the kinetic energy and Coulomb energy allows for a transition between unpolarized and polarized states as a function of the ring parameters. This allows for a new class of polarizable materials whose transitions are based on geometry, rather than a structural transition in a unit cell.

Affiliated with

Also associated with

No associations

Rating

Polarization transitions in quantum ring arrays 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 Polarization transitions in quantum ring arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization transitions in quantum ring arrays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-237350