Abstract
The magneto-transport properties of two-dimensional electron gas (2DEG) of n-type modulation-doped Cd 1− x Mn x Te/Cd 1− y Mg y Te single quantum wells were investigated under magnetic fields up to 7 T applied perpendicular to the 2D plane at 2 K . The 2D carrier concentration was varied in the range of 1.8– 4.6×10 11 cm −2 . Apart from the quantum behavior in the magneto- and Hall resistance, a positive and successively negative magnetoresistance (MR) appeared at low magnetic fields. This effect was not observed in non-magnetic 2DEG. This peculiar MR is interpreted as caused by the enhanced spin-splitting in magnetic 2DEG. The appearance of the positive and negative MR was more distinct in a sample with lower carrier concentrations. The positive MR was analyzed on the basis of the theoretical model of the quantum correction to the conductivity in the disordered system.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Physica E: Low-dimensional Systems and Nanostructures
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
