Weak antilocalization in quantum wells in tilted magnetic fields
Weak antilocalization in quantum wells in tilted magnetic fields
Weak antilocalization is studied in an ${\mathrm{In}}_{x}{\mathrm{Ga}}_{1\ensuremath{-}x}\mathrm{As}$ quantum well. Anomalous magnetoresistance is measured and described theoretically in fields perpendicular, tilted, and parallel to the quantum well plane. Spin and phase-relaxation times are found as functions of temperature and parallel field. It is demonstrated that spin dephasing is due to the …