DC Field | Value | Language |
---|---|---|
dc.contributor.author | Souri, M. | - |
dc.contributor.author | Kim, B.H. | - |
dc.contributor.author | Gruenewald, J.H. | - |
dc.contributor.author | Connell, J.G. | - |
dc.contributor.author | Thompson, J. | - |
dc.contributor.author | Nichols, J. | - |
dc.contributor.author | Terzic, J. | - |
dc.contributor.author | Min, B.I. | - |
dc.contributor.author | Cao, G. | - |
dc.contributor.author | Brill, J.W. | - |
dc.contributor.author | Seo, A. | - |
dc.date.accessioned | 2018-06-15T05:26:49Z | - |
dc.date.available | 2018-06-15T05:26:49Z | - |
dc.date.created | 2017-12-21 | - |
dc.date.issued | 2017-06 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/50485 | - |
dc.description.abstract | We have investigated the electronic and optical properties of (Sr1-xCax)2IrO4 (x=0-0.375) and (Sr1-yBay)2IrO4 (y=0-0.375) epitaxial thin films, in which the bandwidth is systematically tuned via chemical substitutions of Sr ions by Ca and Ba. Transport measurements indicate that the thin-film series exhibits insulating behavior, similar to the Jeff=1/2 spin-orbit Mott insulator Sr2IrO4. As the average A-site ionic radius increases from (Sr1-xCax)2IrO4 to (Sr1-yBay)2IrO4, optical conductivity spectra in the near-infrared region shift to lower energies, which cannot be explained by the simple picture of well-separated Jeff=1/2 and Jeff=3/2 bands. We suggest that the two-peak-like optical conductivity spectra of the layered iridates originates from the overlap between the optically forbidden spin-orbit exciton and the intersite optical transitions within the Jeff=1/2 band. Our experimental results are consistent with this interpretation as implemented by a multiorbital Hubbard model calculation: namely, incorporating a strong Fano-like coupling between the spin-orbit exciton and intersite d-d transitions within the Jeff=1/2 band. ? 2017 American Physical Society. | - |
dc.language | English | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.relation.isPartOf | Physical Review b | - |
dc.title | Optical signatures of spin-orbit exciton in bandwidth-controlled Sr2IrO4 epitaxial films via high-concentration Ca and Ba doping | - |
dc.type | Article | - |
dc.identifier.doi | 10.1103/PhysRevB.95.235125 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Physical Review b, v.95, no.23, pp.235125 | - |
dc.identifier.wosid | 000403227400002 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.number | 23 | - |
dc.citation.startPage | 235125 | - |
dc.citation.title | Physical Review b | - |
dc.citation.volume | 95 | - |
dc.contributor.affiliatedAuthor | Min, B.I. | - |
dc.identifier.scopusid | 2-s2.0-85024383805 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 3 | - |
dc.description.isOpenAccess | Y | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | INSULATOR | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
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