The status of two-dimensional Si/SiGe heterostructures

Silicon has dominated the semiconductor market consistently for decades. Other semiconductors, such as gallium arsenide, have found important niches, but the computer industry has yet to difoplace silicon as its favorite semiconductor. Recently, however, silicon-germanium alloys have been a focus of research, because they offer the option of greatly enhancing the speed and flexibility of silicon and can be integrated with existing silicon technology rather than replacing it. This article reviews some of the exciting new results in Si/SiGe heterostructures. © 1993 TMS.