منابع مشابه
Room-temperature ferromagnetism in Mn-doped semiconducting CdGeP2.
The chalcopyrite CdGeP2 doped with Mn have been recently found to exhibit room-temperature ferromagnetism. Isovalent substitution of the Cd site is expected, however, to create antiferromagnetism, in analogy with the well-known CdTe:Mn (d5) case. However, chalcopyrite semiconductors exhibit low-energy intrinsic defects. We show theoretically how ferromagnetism results from the interaction of Mn...
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The quantized anomalous Hall effect (QAHE) have been theoretically predicted and experimentally confirmed in magnetic topological insulators (TI), but dissipative channels resulted by small-size band gap and weak ferromagnetism make QAHE be measured only at extremely low temperature (<0.1 K). Through density functional theory calculations, we systemically study of the magnetic properties and el...
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(Ga,Mn)As and (Ga,Mn)N are so called diluted magnetic semiconductors, i.e. semiconductor based materials made ferromagnetic by inclusion of a magnetic element—in this case Mn. This type of materials bridge over the incompatibilities in metal–semiconductor interfaces in electronics components and have an enormous potential for future spintronics applications, where both charge and spin degrees o...
متن کاملEffects of Mn clustering on ferromagnetism in (Ga,Mn)As
The magnetic interactions of substitutional Mn clusters in (Ga,Mn)As are investigated using density-functional total-energy supercell calculations within the projector augmented-wave method. Magnetic coupling strength values are directly calculated from the parallel and antiparallel spin alignments, and then used to estimate the Curie temperature TC. The magnetic interactions both inside the cl...
متن کاملCrafting ferromagnetism in Mn-doped MgO surfaces with p-type defects
We have employed first-principles calculations based on density functional theory (DFT) to investigate the underlying physics of unusual magnetism in Mn-doped MgO surface. We have studied two distinct scenarios. In the first one, two Mn atoms are substitutionally added to the surface, occupying the Mg sites. Both are stabilized in the Mn[Formula: see text] valence state carrying a local moment ...
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ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 2014
ISSN: 0953-8984,1361-648X
DOI: 10.1088/0953-8984/26/20/206002