Half-metallicity and magnetism of GeTe doped with transition metals V, Cr, and Mn: A theoretical study from the viewpoint of application in spintronics
Half-metallicity and magnetism of GeTe doped with transition metals V, Cr, and Mn: A theoretical study from the viewpoint of application in spintronics
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过渡金属V、Cr、Mn掺杂GeTe的半金属性和磁性:从自旋电子学应用角度进行理论研究
DOI:
10.1063/1.4750031
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发表时间:
2012-09
期刊:
影响因子:
--
通讯作者:
刘永
中科院分区:
文献类型:
--
作者:
刘永
This work presents results for the magnetic properties of the compound GeTe doped with 3d transition metals V, Cr, and Mn from the viewpoint of potential application in spintronics. We report a systematic density-functional study of the electronic structure, magnetic and cohesive properties of these ternary compounds in both rock salt and zinc blende structures. In both cases, it is the Ge sublattice that is doped with the three transition metals. Some of these compounds are found to be half-metallic at their optimized cell volumes. For these particular cases, we calculate both exchange interactions and the Curie temperatures in order to provide some theoretical guidance to experimentalists trying to fabricate materials suitable for spintronic devices. Discussions relating our results to the existing experimental studies are provided whenever applicable and appropriate. Apparent discrepancy between experimental observations and our theoretical result for the case of Mn-doping is discussed in detail, point...
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