DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chang, Yun Hee | ko |
dc.contributor.author | Lee, Geunseop | ko |
dc.contributor.author | Kim, Hanchul | ko |
dc.date.accessioned | 2018-03-21T02:06:23Z | - |
dc.date.available | 2018-03-21T02:06:23Z | - |
dc.date.created | 2018-02-27 | - |
dc.date.created | 2018-02-27 | - |
dc.date.issued | 2018-02 | - |
dc.identifier.citation | JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.72, no.3, pp.372 - 378 | - |
dc.identifier.issn | 0374-4884 | - |
dc.identifier.uri | http://hdl.handle.net/10203/240564 | - |
dc.description.abstract | One-dimensional indium chains on Si(111) exhibit both temperature-and defect-induced perioddoubling (x2) structural transitions, and their natures have been focus of recent investigations. Using density functional perturbation theory calculations, we examined the vibrational properties of the room-temperature Si(111)In-4x1 structure. The phonon band structure revealed two unstable modes at the zone-boundary in the chain direction, which lead to a lattice instability towards a structure with parallel trimers. This lattice-instability-driven 4 x 2 structure is different from the low-temperature 4x2 (LT-4x2) structure (hexagon structure). The result suggests that the roomtemperature phase is neither a static 4x1 phase nor the dynamical fluctuation of the LT-4x2 phase. We demonstrate that the room-temperature phase is a dynamically fluctuating parallel-trimer 4x2 phase, and the fluctuations become suppressed near the defects to result in the defect-induced x2 structure. | - |
dc.language | English | - |
dc.publisher | KOREAN PHYSICAL SOC | - |
dc.subject | SI(001) SURFACE | - |
dc.subject | QUANTUM CHAINS | - |
dc.subject | TRANSITION | - |
dc.subject | SILICON | - |
dc.subject | PHONON | - |
dc.subject | PHASE | - |
dc.subject | DIMER | - |
dc.subject | WAVE | - |
dc.title | Room-Temperature Atomic Structure and Lattice Instability of In Nanowires on Si(111) | - |
dc.type | Article | - |
dc.identifier.wosid | 000424690700008 | - |
dc.identifier.scopusid | 2-s2.0-85041552083 | - |
dc.type.rims | ART | - |
dc.citation.volume | 72 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 372 | - |
dc.citation.endingpage | 378 | - |
dc.citation.publicationname | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.identifier.doi | 10.3938/jkps.72.372 | - |
dc.contributor.localauthor | Chang, Yun Hee | - |
dc.contributor.nonIdAuthor | Lee, Geunseop | - |
dc.contributor.nonIdAuthor | Kim, Hanchul | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Indium nanowire | - |
dc.subject.keywordAuthor | Si(111) surface | - |
dc.subject.keywordAuthor | Lattice instability | - |
dc.subject.keywordAuthor | Phonon dispersion | - |
dc.subject.keywordAuthor | Structural phase transition | - |
dc.subject.keywordPlus | SI(001) SURFACE | - |
dc.subject.keywordPlus | QUANTUM CHAINS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | SILICON | - |
dc.subject.keywordPlus | PHONON | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordPlus | DIMER | - |
dc.subject.keywordPlus | WAVE | - |
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