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DC Field | Value | Language |
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dc.citation.startPage | 155115 | - |
dc.citation.title | PHYSICAL REVIEW B | - |
dc.citation.volume | 89 | - |
dc.contributor.author | Park, HJ | - |
dc.contributor.author | Sohn, Chang Hee | - |
dc.contributor.author | Jeong, DW | - |
dc.contributor.author | Cao, G | - |
dc.contributor.author | Kim, KW | - |
dc.contributor.author | Moon, SJ | - |
dc.contributor.author | Jin, Hosub | - |
dc.contributor.author | Cho, Deok-Yong | - |
dc.contributor.author | Noh, TW | - |
dc.date.accessioned | 2023-12-22T02:43:19Z | - |
dc.date.available | 2023-12-22T02:43:19Z | - |
dc.date.created | 2015-07-29 | - |
dc.date.issued | 2014-04 | - |
dc.description.abstract | We examined the temperature (T) evolution of the optical conductivity spectra of Sr3Ir2O7 over a wide range of 10-400 K. The system was barely insulating, exhibiting a small indirect bandgap of <= 0.1 eV. The low-energy features of the optical d-d excitation (h omega < 0.3 eV) evolved drastically, whereas such evolution was not observed for the O K-edge x-ray-absorption spectra. This suggests that the T evolution in optical spectra is not caused by a change in the bare (undressed) electronic structure, but instead presumably originates from an abundance of phonon-assisted indirect excitations. Our results showed that the low-energy excitations were dominated by phonon-absorption processeswhich involved, in particular, the optical phonons. This implies that phonon-assisted processes significantly facilitate the charge dynamics in barely insulating Sr3Ir2O7. | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW B, v.89, pp.155115 | - |
dc.identifier.doi | 10.1103/PhysRevB.89.155115 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.scopusid | 2-s2.0-84899769717 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/16806 | - |
dc.identifier.url | http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.155115 | - |
dc.identifier.wosid | 000337348500001 | - |
dc.language | 영어 | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Phonon-assisted optical excitation in the narrow bandgap Mott insulator Sr3Ir2O7 | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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