Volume 70, Number 5, June 2005
|Page(s)||656 - 662|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||29 April 2005|
Interband magneto-optical transitions in a layer of semiconductor nano-rings
Department of Electronic Engineering and Institute of Electronics National Chiao Tung University - 1001 Ta Hsueh Rd., Hsinchu 300, Taiwan
2 Faculty of Applied Science, Twente University - P.O. Box 217 7500 AE Enschede, The Netherlands
3 Department of Applied Mathematics, National Chiao Tung University 1001 Ta Hsueh Rd., Hsinchu 300, Taiwan
Accepted: 12 April 2005
We have developed a quantitative theory of the collective electromagnetic response of layers of semiconductor nano-rings. The response can be controlled by means of an applied magnetic field through the optical Aharonov-Bohm effect and is ultimately required for the design of composite materials. We demonstrate that the local field is of paramount importance in the description of such layers. The changes in ellipsometric parameters are 2 to 3 orders of magnitude above the detection limit of a modern ellipsometer.
PACS: 73.21.-b – Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems / 75.20.Ck – Nonmetals / 75.75.+a – Magnetic properties of nanostructures
© EDP Sciences, 2005
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