Electron-Spin Precession in Dependence of the Orientation of the External Magnetic Field
Nanoscale Science and Technology Centre, Griffith University, Nathan, Brisbane, QLD, 4111, Australia
School of Biomolecular and Physical Sciences, Griffith University, Nathan, Brisbane, QLD, 4111, Australia
Department of Physics, University of Chittagong, Chittagong, 4331, Bangladesh
Nanoscale Research Letters 2009, 4:588-591 doi:10.1007/s11671-009-9283-0Published: 13 March 2009
Electron-spin dynamics in semiconductor-based heterostructures has been investigated in oblique magnetic fields. Spins are generated optically by a circularly polarized light, and the dynamics of spins in dependence of the orientation (θ) of the magnetic field are studied. The electron-spin precession frequency, polarization amplitude, and decay rate as a function ofθare obtained and the reasons for their dependences are discussed. From the measured data, the values of the longitudinal and transverse components of the electrong-factor are estimated and are found to be in good agreement with those obtained in earlier investigations. The possible mechanisms responsible for the observed effects are also discussed.