BROWSE

Related Scientist

kim,bumjoon's photo.

kim,bumjoon
원자제어저차원전자계연구단
more info

ITEM VIEW & DOWNLOAD

Phonon anomalies in pyrochlore iridates studied by Raman spectroscopy

DC Field Value Language
dc.contributor.authorUeda, K-
dc.contributor.authorKaneko, R-
dc.contributor.authorSubedi, A-
dc.contributor.authorMinola, M-
dc.contributor.authorB. J. Kim-
dc.contributor.authorFujioka, J-
dc.contributor.authorTokura, Y-
dc.contributor.authorKeimer, B-
dc.date.available2019-11-13T07:32:51Z-
dc.date.created2019-10-21-
dc.date.issued2019-09-
dc.identifier.issn2469-9950-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/6442-
dc.description.abstractWe report polarization-resolved Raman scattering measurements on single crystals of the pyrochlore compound Eu2Ir2O7 which exhibits a ground state with noncollinear magnetic order, as well as its paramagnetic counterpart Pr2Ir2O7. The spectra reveal the six Raman-active optical phonons expected for the pyrochlore lattice symmetry. Combined with density functional calculations, polarization analysis of the Raman intensity allows us to assign all observed peaks to specific vibration patterns. Whereas most phonon profiles are weakly temperature dependent, an Ir-O-Ir bond-bending vibration in Eu2Ir2O7 exhibits a pronounced Fano asymmetry in the paramagnetic state, and marked softening and line-shape anomalies at the magnetic phase transition. These observations indicate strong electron-phonon interactions, which must be considered in models of the electronic properties and phase behavior of the pyrochlore iridates. In addition, a prominent feature appears at 210 cm(-1) in the Raman spectrum of Eu2Ir2O7 below the magnetic transition temperature, possibly due to a magnetic excitation. ©2019 American Physical Society-
dc.description.uri1-
dc.language영어-
dc.publisherAMER PHYSICAL SOC-
dc.titlePhonon anomalies in pyrochlore iridates studied by Raman spectroscopy-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000488256100002-
dc.identifier.scopusid2-s2.0-85072799309-
dc.identifier.rimsid70326-
dc.contributor.affiliatedAuthorB. J. Kim-
dc.identifier.doi10.1103/PhysRevB.100.115157-
dc.identifier.bibliographicCitationPHYSICAL REVIEW B, v.100, no.11, pp.5157-
dc.citation.titlePHYSICAL REVIEW B-
dc.citation.volume100-
dc.citation.number11-
dc.citation.startPage5157-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordPlusONE-MAGNON-
dc.subject.keywordPlusSCATTERING-
dc.subject.keywordPlusSPECTRA-
dc.subject.keywordPlusEXCITATIONS-
dc.subject.keywordPlusLIGHT-
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
2019_PRB_김범준(공동)_Phonon anomalies in pyrochlore iridates studied by Raman spectroscopy_PhysRevB.100.115157.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse