Ferromagnetism in diluted magnetic semiconductor heterojunction systems

Abstract

Diluted magnetic semiconductors (DMSs), in which magnetic elements are\nsubstituted for a small fraction of host elements in a semiconductor lattice,\ncan become ferromagnetic when doped. In this article we discuss the physics of\nDMS ferromagnetism in systems with semiconductor heterojunctions. We focus on\nthe mechanism that cause magnetic and magnetoresistive properties to depend on\ndoping profiles, defect distributions, gate voltage, and other system\nparameters that can in principle be engineered to yield desired results.\n