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題名 High spin polarization of the anomalous Hall current in Co-based Heusler compounds 作者 郭光宇
Tung, Jen-Chuan ;貢獻者 應物所 日期 2013-03 上傳時間 27-Nov-2013 16:09:06 (UTC+8) 摘要 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. 關聯 New Journal of Physics, 15(3), 033014 資料類型 article DOI http://dx.doi.org/10.1088/1367-2630/15/3/033014 dc.contributor 應物所 en_US dc.creator (作者) 郭光宇 zh_TW dc.creator (作者) Tung, Jen-Chuan ; en_US dc.date (日期) 2013-03 en_US dc.date.accessioned 27-Nov-2013 16:09:06 (UTC+8) - dc.date.available 27-Nov-2013 16:09:06 (UTC+8) - dc.date.issued (上傳時間) 27-Nov-2013 16:09:06 (UTC+8) - dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/61888 - dc.description.abstract (摘要) 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. en_US dc.format.extent 515123 bytes - dc.format.mimetype application/pdf - dc.language.iso en_US - dc.relation (關聯) New Journal of Physics, 15(3), 033014 en_US dc.title (題名) High spin polarization of the anomalous Hall current in Co-based Heusler compounds en_US dc.type (資料類型) article en dc.identifier.doi (DOI) 10.1088/1367-2630/15/3/033014 en_US dc.doi.uri (DOI) http://dx.doi.org/10.1088/1367-2630/15/3/033014 en_US
