Metal--topological-insulator transition in the quantum kicked rotator with Z2 symmetry

Details Metal--topological-insulator transition in the quantum kicked rotator with Z2 symmetry Metal--topological-insulator transition in the quantum kicked rotator with Z2 symmetry

2012-01-16

arxiv.org/abs/1201.3361v2

Phys. Rev. B 85, 165131 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 figures, 6 pages

Scientific paper

10.1103/PhysRevB.85.165131

The quantum kicked rotator is a periodically driven dynamical system with a metal-insulator transition. We extend the model so that it includes phase transitions between a metal and a topological insulator, in the universality class of the quantum spin Hall effect. We calculate the Z2 topological invariant using a scattering formulation that remains valid in the presence of disorder. The scaling laws at the phase transition can be studied efficiently by replacing one of the two spatial dimensions with a second incommensurate driving frequency. We find that the critical exponent does not depend on the topological invariant, in agreement with earlier independent results from the network model of the quantum spin Hall effect.

Affiliated with

Also associated with

No associations

Rating

Metal--topological-insulator transition in the quantum kicked rotator with Z2 symmetry 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 Metal--topological-insulator transition in the quantum kicked rotator with Z2 symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal--topological-insulator transition in the quantum kicked rotator with Z2 symmetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-96236