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VOLUME 96 (2012) | ISSUE 11 | PAGE 821
Ab initio search of novel bipolar magnetic semiconductors: layered YZnAsO doped with Fe and Mn
Abstract
Very recently, the newest class of spintronic materials, where reversible spin polarization can be controlled by applying gate voltage: so-called bipolar magnetic semiconductors (BMSs, X. Li et al., arXiv:1208.1355) was proposed. In this Letter, a novel way to creation of BMSs by doping of non-magnetic semiconducting 1111 phases with magnetic dn<10 atoms is discussed using ab initio calculations of layered YZnAsO doped with Fe and Mn. In addition, more complex materials with several spectral intervals with opposite 100% spin polarization where multiple gate-controlled spin-polarization can be expected, are proposed.