Effects of spin polarization on electron transport in modulation-doped Cd1−xMnxTe/Cd1−yMgyTe:I heterostructures

✍ Scribed by T Andrearczyk; J Jaroszyński; G Karczewski; J Wróbel; T Wojtowicz; T Dietl; E Papis; E Kamińska; A Piotrowska

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 218 KB
• Volume: 12
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(01)00278-8

✦ Synopsis

We examine and identify magnetoresistance mechanisms in 2D system containing a sizable concentration of magnetic ions. We argue that some of these mechanisms can serve as a tool to measure spin polarization. Lack of spin degeneracy and enhanced localization make it possible to detect an additional Quantum Hall E ect plateau associated with extended states oating-up in vanishing magnetic ÿeld.