Half-metallic diluted antiferromagnetic semiconductors

TL;DR

This paper explores the theoretical possibility of half-metallic antiferromagnetism in diluted magnetic semiconductors, focusing on specific II-VI compounds doped with transition metal pairs, using first principles calculations.

Contribution

It demonstrates, through first principles calculations, the potential for half-metallic antiferromagnetism in specific doped semiconductors, a novel magnetic state.

Findings

Half-metallic antiferromagnetism is theoretically possible in certain doped semiconductors.

Doped II-VI compounds with transition metal pairs exhibit unique electrical and magnetic properties.

First principles calculations support the feasibility of this magnetic state in these materials.

Abstract

The possibility of half-metallic antiferromagnetism, a special case of ferrimagnetism with a compensated magnetization, in the diluted magnetic semiconductors is highlighted on the basis of the first principles electronic structure calculation. As typical examples, the electrical and magnetic properties of II-VI compound semiconductors doped with 3d transition metal ion pairs--(V, Co) and (Fe, Cr)--are discussed.