Matches in SemOpenAlex for { <https://semopenalex.org/work/W1975305624> ?p ?o ?g. }
- W1975305624 abstract "We report on a comprehensive combined experimental and theoretical study of Curie temperature trends in (Ga,Mn)As ferromagnetic semiconductors. Broad agreement between theoretical expectations and measured data allows us to conclude that ${T}_{c}$ in high-quality metallic samples increases linearly with the number of uncompensated local moments on ${mathrm{Mn}}_{mathrm{Ga}}$ acceptors, with no sign of saturation. Room temperature ferromagnetism is expected for a 10% concentration of these local moments. Our magnetotransport and magnetization data are consistent with the picture in which Mn impurities incorporated during growth at interstitial ${mathrm{Mn}}_{mathrm{I}}$ positions act as double-donors and compensate neighboring ${mathrm{Mn}}_{mathrm{Ga}}$ local moments because of strong near-neighbor ${mathrm{Mn}}_{mathrm{Ga}}{mathrm{Mn}}_{mathrm{I}}$ antiferromagnetic coupling. These defects can be efficiently removed by post-growth annealing. Our analysis suggests that there is no fundamental obstacle to substitutional ${mathrm{Mn}}_{mathrm{Ga}}$ doping in high-quality materials beyond our current maximum level of 6.8%, although this achievement will require further advances in growth condition control. Modest charge compensation does not limit the maximum Curie temperature possible in ferromagnetic semiconductors based on (Ga,Mn)As." @default.
- W1975305624 created "2016-06-24" @default.
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- W1975305624 date "2005-10-13" @default.
- W1975305624 modified "2023-10-13" @default.
- W1975305624 title "Prospects for high temperature ferromagnetism in (Ga,Mn)As semiconductors" @default.
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- W1975305624 doi "https://doi.org/10.1103/physrevb.72.165204" @default.
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