Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Kim, Hyunyoung | - |
dc.contributor.author | Bang, Junhyeok | - |
dc.contributor.author | Kang, Joongoo | - |
dc.date.accessioned | 2018-10-11T02:02:57Z | - |
dc.date.available | 2018-10-11T02:02:57Z | - |
dc.date.created | 2018-10-04 | - |
dc.date.issued | 2018-09 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/9341 | - |
dc.description.abstract | The origin of the ferromagnetism in metal-free graphitic materials has been a decade-old puzzle. The possibility of long-range magnetic order in graphene has been recently questioned by the experimental findings that point defects in graphene, such as fluorine adatoms and vacancies, lead to defect-induced paramagnetism but no magnetic ordering down to 2 K. It remains controversial whether collective magnetic order in graphene can emerge from point defects at finite temperatures. This work provides a new framework for understanding the ferromagnetism in hydrogenated graphene, highlighting the key contribution of the spin-polarized pseudospin as a “mediator” of long-range magnetic interactions in graphene. Using first-principles calculations of hydrogenated graphene, we found that the unique ‘zero-energy’ position of H-induced quasilocalized states enables notable spin polarization of the graphene’s sublattice pseudospin. The pseudospin-mediated magnetic interactions between the H-induced magnetic moments stabilize the two-dimensional ferromagnetic ordering with Curie temperatures of Tc = nH × 34,000 K for the atom percentage nH of H adatoms. These findings show that atomic-scale control of hydrogen adsorption on graphene can give rise to a robust magnetic order. © 2018, The Author(s). | - |
dc.language | English | - |
dc.publisher | Nature Publishing Group | - |
dc.title | Robust ferromagnetism in hydrogenated graphene mediated by spin-polarized pseudospin | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41598-018-31934-0 | - |
dc.identifier.scopusid | 2-s2.0-85053385036 | - |
dc.identifier.bibliographicCitation | Scientific Reports, v.8, no.1 | - |
dc.description.isOpenAccess | TRUE | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE FERROMAGNETISM | - |
dc.subject.keywordPlus | AUGMENTED-WAVE METHOD | - |
dc.subject.keywordPlus | POINT-DEFECTS | - |
dc.subject.keywordPlus | MAGNETISM | - |
dc.subject.keywordPlus | NANORIBBONS | - |
dc.subject.keywordPlus | GRAPHITE | - |
dc.subject.keywordPlus | MODEL | - |
dc.citation.number | 1 | - |
dc.citation.title | Scientific Reports | - |
dc.citation.volume | 8 | - |