Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1547583 | Physica E: Low-dimensional Systems and Nanostructures | 2006 | 4 Pages |
Abstract
Linear light absorption of 2D electrons confined within a biased quantum well is studied theoretically. We demonstrate that for light polarization perpendicular to the 2D plane, in addition to conventional absorption peak at frequency âÏâÎ, where Î is the intersubband energy distance, there exists a peak around a double frequency âÏâ2Î. This additional peak is entirely due to electron-electron interactions, and corresponds to excitation of two electrons by one photon. The magnitude of two-electron absorption is proportional to U2, where U is the applied bias.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
J. Dai, M.E. Raikh, T.V. Shahbazyan,