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Open Access Nano Perspectives

Electron-Spin Precession in Dependence of the Orientation of the External Magnetic Field

M Idrish Miah

Author Affiliations

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/s11671-009-9283-0

Published: 13 March 2009

Abstract

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.

Keywords:
Quantum well; Spin dynamics; Electrong-factor