University
of Toronto Physics Department
Quantum Optics and Condensed Matter
MONDAY SEMINAR
University
of Toronto | Speaker : | Jordan Kyriakidis
University of Basel Switzerland |
| Topic : | Quantum Dynamics of Topological Solitons in Double-Layer Quantum Hall Systems |
| Time : | Monday, July 19, 1999 at 12:00 p.m. |
| Place : | Room 408, Burton Tower 60 St. George Street / 255 Huron Street |
In double-layer quantum Hall systems, topological phase solitons may be thermally excited at arbitrarily low temperatures (and may even exist in the ground state) with the application of an in-plane field. I'll present our recent results [1] on the quantum dynamics of these solitons, including a derivation of the intrinsic dissipation. The solitons can be trapped, released, and otherwise manipulated, by applying gates to the sample in various geometries. As an example, I'll consider metastable potentials. The tunnelling rate out of the metastable minimum depends on, for example, the experimentally tuneable bias voltage. The various experimental signatures of this physics should be observable in electrostatic, magnetostatic, and tunnelling measurements.
[1] Jordan Kyriakidis, Daniel Loss, and A. H. MacDonald cond-mat/9904185.
Local Host: Nipun Vats 
(416-978-5207)
See http://www.physics.utoronto.ca/~qocmp