We have studied the transport and magnetic properties of Ga1-xMnxAs/GaAs with different Mn content (0.015 < x < 0.071). In these magnetic semiconductors, the exchange interaction between the carriers and the localized magnetic moments leads to unique transport properties. In this paper, we discuss an insulator-metal-insulator transition and a giant negative magnetoresistance observed in the vicinity of the metal-insulator transitions.
|Number of pages||5|
|Journal||Physica Status Solidi (B) Basic Research|
|Publication status||Published - 1998 Jan|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics