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Magneto-optical response of layers of semiconductor quantum dots and nanorings
| Content Provider | Semantic Scholar |
|---|---|
| Author | Voskoboynikov, O. Wijers, Christianus M. J. Liu, Jinn-Liang Lee, Chien-Ping |
| Copyright Year | 2005 |
| Abstract | In this paper a comparative theoretical study was made of the magneto-optical response of square lattices of nanoobjects (dots and rings). Expressions for both the polarizability of the individual objects as their mutual electromagnetic interactions (for a lattice in vacuum) was derived. The quantum-mechanical part of the derivation is based upon the commonly used envelope function approximation. The description is suited to investigate the optical response of these layers in a narrow region near the interband transitions onset, particularly when the contribution of individual level pairs can be separately observed. A remarkable distinction between clearly quantum-mechanical and classical electromagnetic behavior was found in the shape and volume dependence of the polarizability of the dots and rings. This optical response of a single plane of quantum dots and nanorings was explored as a function of frequency, magnetic field, and angle of incidence. Although the reflectance of these layer systems is not very strong, the ellipsometric angles are large. For these isolated dot-ring systems they are of the order of magnitude of degrees. For the ring systems a full oscillation of the optical Bohm-Ahronov effect could be isolated. Layers of dots do not display any remarkable magnetic field dependence. Both type of systems, dots and rings, exhibit an outspoken angular-dependent dichroism of quantum-mechanical origin. |
| Starting Page | 245332 |
| Ending Page | 245332 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1103/PhysRevB.71.245332 |
| Volume Number | 71 |
| Alternate Webpage(s) | http://doc.utwente.nl/57501/1/magneto.pdf |
| Alternate Webpage(s) | https://ir.nctu.edu.tw/bitstream/11536/13596/1/94dcd7216fd0c62dee9f13defffd26e3.pdf |
| Alternate Webpage(s) | https://doi.org/10.1103/PhysRevB.71.245332 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
