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Physical review letters >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2241/101267
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| Title: | Evidence of a Transition from Nonlinear to Linear Screening of a Two-Dimensional Electron System Detected by Photoluminescence Spectroscopy |
| Authors: | Yamaguchi, M.
Nomura, S.
Maruyama, T.
Miyashita, S.
Hirayama, Y.
Tamura, H.
Akazaki, T.
野村, 晋太郎 |
| Issue Date: | Nov-2008 |
| Publisher: | American Physical Society |
| Journal Title: | Physical review letters |
| Volume: | 101 |
| Issue: | 20 |
| Start Page: | 207401 |
| DOI: | 10.1103/PhysRevLett.101.207401 |
| Abstract: | We clearly identify single-electron-localization (SEL), nonlinear screening (NLS), and linear screening (LS) regimes of gate induced electrons in a GaAs quantum well from photoluminescence spectra and intergate capacitance. Neutral and charged excitons observed in the SEL regime rapidly lose their oscillator strength when electron puddles are formed, which mark the onset of NLS. A further increase in the density of the electrons induces the transition from the NLS to LS, where the emission of a charged exciton changes to the recombination of two-dimensional electron gas and a hole. |
| URI: | http://hdl.handle.net/2241/101267 |
| Rights: | ©2008 The American Physical Society |
| Text Version: | publisher |
| Appears in Collections: | Physical review letters
野村 晋太郎 (Nomura Shintaro)
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