Abstract
We measured the electric field induced linear dichroism for a wide range of sizes of CdSe nanocrystals. Large ground-state dipole moments were observed, especially for the smallest crystals. In these, we found a very large anisotropy of the absorption and most of the dipole strength is along the direction of the ground-state dipole moment. For the anisotropy, we propose a mechanism for intensity borrowing from intraband transitions, induced by the field of the ground-state dipole moment. © 2008 The American Physical Society.
Original language | English |
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Pages (from-to) | 165303 |
Journal | Physical Review B. Condensed Matter and Materials Physics |
Volume | 77 |
Issue number | 1, Pages = 165303, |
DOIs | |
Publication status | Published - 2008 |