| Autor: |
Korotchenkov, Oleg A., Polovina, Oleksiy I., Kurylyuk, Vasyl V. |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control; Dec2007, Vol. 54 Issue 12, p2529-2534, 7p, 4 Diagrams, 1 Chart |
| Abstrakt: |
Standing-wave piezoelectric fields in the LiNbO3 driving plate are used to form depleted and accumulated electron densities in GaAs/AlGaAs quantum wells (QWs). The photoluminescence spectrum of the two- dimensional electron system varies both spatially and temporally, exhibiting an electron-hole plasma recombination and exciton and trion emissions at large and small electron densities, respectively. Controlling the piezoelectric field component perpendicular to the QW layers offers a versatile tool to achieve the spatially indirect exciton luminescence in double QW structures. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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