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Please use this identifier to cite or link to this item:
https://nccur.lib.nccu.edu.tw/handle/140.119/61888
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Title: | High spin polarization of the anomalous Hall current in Co-based Heusler compounds |
Authors: | 郭光宇 Tung, Jen-Chuan |
Contributors: | 應物所 |
Date: | 2013-03 |
Issue Date: | 2013-11-27 16:09:06 (UTC+8) |
Abstract: | Based on first principles density functional calculations of the intrinsic anomalous and spin Hall conductivities, we predict that the charge Hall current in Co-based full Heusler compounds Co2XZ (X = Cr and Mn; Z = Al, Si, Ga, Ge, In and Sn), except Co2CrGa, would be almost fully spin polarized, even though Co2MnAl, Co2MnGa, Co2MnIn and Co2MnSn do not have a half-metallic band structure. Furthermore, the ratio of the associated spin current to the charge Hall current is slightly larger than 1.0. This suggests that these Co-based Heusler compounds, especially Co2MnAl, Co2MnGa and Co2MnIn which are found to have large anomalous and spin Hall conductivities, might be called anomalous Hall half-metals and could have valuable applications in spintronics such as spin valves as well as magnetoresistive and spin-torque-driven nanodevices. These interesting findings are discussed in terms of the calculated electronic band structures, magnetic moments and also anomalous and spin Hall conductivities as a function of the Fermi level. |
Relation: | New Journal of Physics, 15(3), 033014 |
Data Type: | article |
DOI 連結: | http://dx.doi.org/10.1088/1367-2630/15/3/033014 |
DOI: | 10.1088/1367-2630/15/3/033014 |
Appears in Collections: | [應用物理研究所 ] 期刊論文
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1367-2630_15_3_033014.pdf | | 503Kb | Adobe PDF2 | 1431 | View/Open |
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