Bibliographic Details
| Title: |
Anomalous circular polarization of magneto-photoluminescence from individual CdSe nanocrystals |
| Authors: |
Htoon, H., Crooker, S. A., Furis, M., Jeong, S., Efros, Al. L., Klimov, V. I. |
| Source: |
Physical Review Letters 102, 017402 (2009) |
| Publication Year: |
2008 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| More Details: |
We study the low-temperature magneto-photoluminescence (PL) from individual CdSe nanocrystals. Nanocrystals having a small "bright" exciton fine structure splitting ($<$0.5 meV) exhibit a conventional left- and right-circularly polarized Zeeman PL doublet in applied magnetic fields. In contrast, nanocrystals with large fine structure splitting ($>$1 meV) show an anomalous magneto-PL polarization, wherein the lower-energy peak becomes circularly polarized with increasing field, while the higher-energy peak remains linearly polarized. This unusual behavior arises from strong mixing between the absorbing and emitting bright exciton levels due to strong anisotropic exchange interactions.
Comment: 15 pages, 3 figures; submitted |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.102.017402 |
| Access URL: |
http://arxiv.org/abs/0809.1116 |
| Accession Number: |
edsarx.0809.1116 |
| Database: |
arXiv |
