Abstract
Spin-dependent intersubband excitonic interactions have been investigated in GaAs/AlGaAs quantum wells by two-color pump and probe spectroscopy. We generated spin-polarized electrons in the lowest subband by resonant excitation of the heavy-hole exciton (E1 -HH1) and observed polarization-dependent broadening of the second-subband exciton resonance (E2 -HH2 and E2 -LH1). The exchange interaction between the first and the second-subband excitons is found to play a crucial role in polarization-dependent spectral modulation as well as spin-independent Coulomb screening.
| Original language | English |
|---|---|
| Article number | 162104 |
| Journal | Applied Physics Letters |
| Volume | 94 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2009 May 6 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Morita, K., Sanada, H., Matsuzaka, S., Ohno, Y., & Ohno, H. (2009). Intersubband exchange interaction induced by optically excited electron spins in GaAs/AlGaAs quantum wells. Applied Physics Letters, 94(16), [162104]. https://doi.org/10.1063/1.3118584