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New Class of High-TC Diluted Ferromagnetic Semiconductors Based on CaO without Transition Metal Elements

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Abstract

We propose new-type ferromagnetic semiconductors based on CaO and K2S without any transition metal elements. These materials show transparent and half-metallic ferromagnetism if the deep-impurity-band width (W) induced by doping of C, N, Si, or Ge impurities, and the electron-correlation energy (U) satisfy the Stoner’s condition of highly correlated electron system (U>W). Based on our first-principles calculations, we demonstrate that these materials satisfy the Stoner’s condition, and could be new candidates for transparent and half-metallic DMSs.

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Authors and Affiliations

  1. The Institute of Industrial Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan

    Kazuhide Kemmochi, Masayoshi Seike, Kazunori Sato, Akira Yanase & Hiroshi Katayama-Yoshida

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  1. Kazuhide Kemmochi
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  2. Masayoshi Seike
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  3. Kazunori Sato
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  4. Akira Yanase
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  5. Hiroshi Katayama-Yoshida
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Kemmochi, K., Seike, M., Sato, K. et al. New Class of High-TC Diluted Ferromagnetic Semiconductors Based on CaO without Transition Metal Elements. J Supercond 18, 37–40 (2005). https://doi.org/10.1007/s10948-005-2147-7

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  • DOI: https://doi.org/10.1007/s10948-005-2147-7

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