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dc.contributor.author문순재-
dc.date.accessioned2017-09-27T08:04:40Z-
dc.date.available2017-09-27T08:04:40Z-
dc.date.issued2015-12-
dc.identifier.citationPHYSICAL REVIEW LETTERS, v. 115, NO 26, Article number 266402, Page. 1-5en_US
dc.identifier.issn0031-9007-
dc.identifier.issn1079-7114-
dc.identifier.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.266402-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/29437-
dc.description.abstractWe investigated the metal-insulator transition (MIT) driven by all-in-all-out (AIAO) antiferromagnetic ordering in the 5d pyrochlore Cd2Os2O7 using optical spectroscopy and first-principles calculations. We showed that the temperature evolution in the band-gap edge and free carrier density were consistent with rigid upward (downward) shifts of electron (hole) bands, similar to the case of Lifshitz transitions. The delicate relationship between the band gap and free carrier density provides experimental evidence for the presence of an AIAO metallic phase, a natural consequence of such MITs. The associated spectral weight change at high energy and first-principles calculations further support the origin of the MIT from the band shift near the Fermi level. Our data consistently support that the MIT induced by AIAO ordering in Cd2Os2O7 is not close to a Slater type but instead to a Lifshitz type.en_US
dc.description.sponsorshipWe thank E. G. Moon, K. S. Burch, and Y. B. Kim for helpful discussions. This work was supported by IBS-R009-D1. S. J. M. and D.-Y. C. was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2014R1A2A1A11054351 and NRF-2015R1C1A1A02037514, respectively).en_US
dc.language.isoenen_US
dc.publisherAMER PHYSICAL SOCen_US
dc.titleOptical Spectroscopic Studies of the Metal-Insulator Transition Driven by All-In-All-Out Magnetic Ordering in 5d Pyrochlore Cd2Os2O7en_US
dc.typeArticleen_US
dc.relation.no26-
dc.relation.volume115-
dc.identifier.doi10.1103/PhysRevLett.115.266402-
dc.relation.page1-5-
dc.relation.journalPHYSICAL REVIEW LETTERS-
dc.contributor.googleauthorSohn, C. H.-
dc.contributor.googleauthorJeong, Hogyun-
dc.contributor.googleauthorJin, Hosub-
dc.contributor.googleauthorKim, Soyeon-
dc.contributor.googleauthorSandilands, L. J.-
dc.contributor.googleauthorPark, H. J.-
dc.contributor.googleauthorKim, K. W.-
dc.contributor.googleauthorMoon, S. J.-
dc.contributor.googleauthorCho, Deok-Yong-
dc.contributor.googleauthorYamaura, J.-
dc.relation.code2015001420-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF NATURAL SCIENCES[S]-
dc.sector.departmentDEPARTMENT OF PHYSICS-
dc.identifier.pidsoonjmoon-
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COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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