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

M. Idrish Miah | Zendy

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

Author(s) -

M. Idrish Miah

Publication year - 2009

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3119318

Subject(s) - condensed matter physics , spins , physics , magnetic field , quantum well , electron , exchange interaction , polarization (electrochemistry) , oscillation (cell signaling) , transverse plane , spin polarization , chemistry , ferromagnetism , quantum mechanics , laser , biochemistry , structural engineering , engineering

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. 鲰09 American Institute of PhysicsGriffith Sciences, School of Natural SciencesFull Tex

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