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Ferromagnetic nanostructures of oxygen on Ag(111)
| Title: | Ferromagnetic nanostructures of oxygen on Ag(111) |
| Authors: | Kunisada, Y Browse this author | | Nakanishi, H Browse this author | | Diño, W A Browse this author | | Kasai, H Browse this author |
| Keywords: | ferromagnetic properties |
| Issue Date: | 2012 |
| Publisher: | IOP Publishing |
| Journal Title: | Journal of Physics: Conference Series |
| Volume: | 379 |
| Start Page: | 012013 |
| Publisher DOI: | 10.1088/1742-6596/379/1/012013 |
| Abstract: | First principles calculations were performed to investigate the robustness of oxygen adsorbed structures that show ferromagnetic properties. These ferromagnetic properties are induced by ferromagnetic superexchange interactions and Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions. Such ferromagnetic oxygen adsorbed structures appear only in the case of coverages higher than 0.5 ML, because the ferromagnetic superexchange interactions and RKKY interactions are appreciable between O-O only for short distances. In this work, we focused on single oxygen atom diffusion parallel and perpendicular to Ag(111) surfaces. The in-plane diffusion could induce associative desorption, which reduces the oxygen coverage. On the other hand, diffusion to the subsurface could quench the magnetic moment. These diffusion paths have effective diffusion barriers of 0.78 eV. Thus, such diffusion rarely occurs in low temperature regions. |
| Rights: | Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd. |
| Relation: | https://iopscience.iop.org/article/10.1088/1742-6596/379/1/012013/meta |
| Type: | article |
| URI: | http://hdl.handle.net/2115/76957 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 國貞 雄治
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