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Photo-Induced Spin Dynamics in Semiconductor Quantum Wells

Miah, M. Idrish (2009) Photo-Induced Spin Dynamics in Semiconductor Quantum Wells. Nanoscale Research Letters, 4 (4). pp. 385-388.

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We experimentally investigate the dynamics of spins in GaAs quantum wells under applied electric bias by photoluminescence (PL) measurements excited with circularly polarized light. The bias-dependent circular polarization of PL (P PL) with and without magnetic field is studied. The P PL without magnetic field is found to be decayed with an enhancement of increasing the strength of the negative bias. However, P PL in a transverse magnetic field shows oscillations under an electric bias, indicating that the precession of electron spin occurs in quantum wells. The results are discussed based on the electron–hole exchange interaction in the electric field.

Item Type:Article
Uncontrolled Keywords:Photoluminescence - Spin transport - Exchange interaction
Subjects:Physical Science > Nanomagnetics
Physical Science > Quantum phenomena
Physical Science > Photonics
ID Code:4152
Deposited By:Lesley Tobin
Deposited On:14 Aug 2009 16:24
Last Modified:14 Aug 2009 16:24

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