Resistively detected ESR and ENDOR experiments in narrow and wide quantum wells: A comparative study

Abstract

Resistively detected electron-spin resonance and electron nuclear double resonance spectra have been acquired in the lowest electronic subband of a remotely Si-doped 400-nm wide GaAs/AlAs digital parabolic quantum well in high parallel and perpendicular magnetic fields at temperatures in the 0.5-10 K range. The temperature dependences of the g-factor, ESR linewidth, line amplitude and nuclear-spin relaxation times, acquired in the two different orientations, are compared to data obtained previously in a 30-nm GaAs quantum well with similar electron density and mobility. © Springer-Verlag Berlin Heidelberg 2009.