| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Fe-Vacancy-Induced Ferromagnetism in Tetragonal FeSe Thin Films |
| LI Yong-Feng, LIU Gui-Bin, SHI Li-Jie, LIU Bang-Gui |
| Institute of Physics, Chinese Academy of Sciences, Beijing 100190Beijing National Laboratory for Condensed Matter Physics, Beijing 100190 |
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| Cite this article: |
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LI Yong-Feng, LIU Gui-Bin, SHI Li-Jie et al 2009 Chin. Phys. Lett. 26 127505 |
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Abstract Motivated by recent experiments, we investigate structural, electronic, and magnetic properties of tetragonal FeSe with Fe vacancies using the state-of-the-art first-principles method. We show that Fe vacancies tend to stay in the same one of the two sublattices and thus induce ferromagnetism in the ground-state phase. Our calculated net moment is in good agreement with the experimental data available. Therefore, the ferromagnetism observed in tetragonal FeSe thin films is explained. It could be made controllable soon for spintronic applications.
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| Keywords:
75.30.-m
71.20.-b
75.50.-y
75.75.+a
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Received: 31 May 2009
Published: 27 November 2009
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| PACS: |
75.30.-m
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(Intrinsic properties of magnetically ordered materials)
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71.20.-b
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(Electron density of states and band structure of crystalline solids)
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75.50.-y
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(Studies of specific magnetic materials)
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75.75.+a
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