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dc.contributor.author Kimura, Shin-ichi ko
dc.contributor.author Kwon, Yong Seung ko
dc.contributor.author Matsumoto, Yuji ko
dc.contributor.author Aoki, Haruyoshi ko
dc.contributor.author Sakai, Osamu ko
dc.date.accessioned 2018-01-25T01:07:48Z -
dc.date.available 2018-01-25T01:07:48Z -
dc.date.created 2017-04-10 -
dc.date.issued 2016-08-15 -
dc.identifier.citation Journal of the Physical Society of Japan, v.85, no.8 -
dc.identifier.issn 0031-9015 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/5084 -
dc.description.abstract Cerium (Ce)-based heavy-fermion materials have a characteristic double-peak structure (mid-IR peak) in the optical conductivity [σ(ω)] spectra originating from the strong conduction (c)-f electron hybridization. To clarify the behavior of the mid-IR peak at a low c-f hybridization strength, we compared the σ(ω) spectra of the isostructural antiferromagnetic and heavy-fermion Ce compounds with the calculated unoccupied density of states and the spectra obtained from the impurity Anderson model. With decreasing c-f hybridization intensity, the mid-IR peak shifts to the low-energy side owing to the renormalization of the unoccupied 4f state, but suddenly shifts to the high-energy side owing to the f-f on-site Coulomb interaction at a slight localized side from the quantum critical point (QCP). This finding gives us information on the change in the electronic structure across QCP. © 2016 The Physical Society of Japan. -
dc.publisher Physical Society of Japan -
dc.title Optical Evidence of Itinerant- Localized Crossover of 4f Electrons in Cerium Compounds -
dc.type Article -
dc.identifier.doi 10.7566/JPSJ.85.083702 -
dc.identifier.wosid 000380721900002 -
dc.identifier.scopusid 2-s2.0-84982710894 -
dc.type.local Article(Overseas) -
dc.type.rims ART -
dc.description.journalClass 1 -
dc.contributor.nonIdAuthor Kimura, Shin-ichi -
dc.contributor.nonIdAuthor Matsumoto, Yuji -
dc.contributor.nonIdAuthor Aoki, Haruyoshi -
dc.contributor.nonIdAuthor Sakai, Osamu -
dc.identifier.citationVolume 85 -
dc.identifier.citationNumber 8 -
dc.identifier.citationTitle Journal of the Physical Society of Japan -
dc.type.journalArticle Article -
dc.contributor.affiliatedAuthor Kwon, Yong Seung -
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Department of Physics and Chemistry Quantum Functional Materials Laboratory 1. Journal Articles

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