Optical probing of spin polarization of electrons in quantum dot edge channels |
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Authors: | Nomura Shintaro Aoyagi Yoshinobu |
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Institution: | CREST, Japan Science and Technology Agency and Institute of Physics, University of Tsukuba Tennodai, Tsukuba, Ibaraki, Japan. snomura@sakura.cc.tsukuba.ac.jp |
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Abstract: | We propose an optical method for the investigation of the quantum dot edge channels by utilizing circularly polarized photoluminescence in the integer-quantum-Hall-effect regime. One of the advantages of our method is that the degree of the spin-polarization of the electrons in the inner- and outer-compressible liquids can be probed separately. The observed polarized photoluminescence spectra can be explained by the calculated electron spin-dependent optical transition probabilities based on the local-spin density approximation. |
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