TITLE

Roles of the bias fields in the exchange interaction between the electron and hole spins in quantum wells

AUTHOR(S)
Miah, M. Idrish
PUB. DATE
May 2009
SOURCE
Applied Physics Letters;5/4/2009, Vol. 94 Issue 18, p182106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We study the electric-field effects on the spin polarization (P) in dependence of the strength and orientation of the magnetic field in GaAs quantum wells by photoluminescence measurements. The P in a transverse magnetic field is found to oscillate. The transverse electron and heavy-hole g-factors are estimated from the dependences of the oscillation frequency on magnetic field and applied bias. Measurements with the angular variations in the magnetic field show that both the oscillation frequency and decay rate are increased with increasing the angle from the transverse direction. It is, however, shown that the application of the bias to the quantum wells weakens the exchange interaction between the electron and hole spins.
ACCESSION #
39354733

 

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