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dc.contributor.authorChen, J. M.en_US
dc.contributor.authorChou, T. L.en_US
dc.contributor.authorLee, J. M.en_US
dc.contributor.authorChen, S. A.en_US
dc.contributor.authorChan, T. S.en_US
dc.contributor.authorChen, T. H.en_US
dc.contributor.authorLu, K. T.en_US
dc.contributor.authorChuang, W. T.en_US
dc.contributor.authorSheu, H. -S.en_US
dc.contributor.authorChen, S. W.en_US
dc.contributor.authorLin, C. M.en_US
dc.contributor.authorHiraoka, N.en_US
dc.contributor.authorIshii, H.en_US
dc.contributor.authorTsuei, K. D.en_US
dc.contributor.authorYang, T. J.en_US
dc.date.accessioned2019-04-03T06:42:23Z-
dc.date.available2019-04-03T06:42:23Z-
dc.date.issued2009-04-01en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.79.165110en_US
dc.identifier.urihttp://hdl.handle.net/11536/149781-
dc.description.abstractThe variation of electronic states and structural distortion in highly compressed multiferroic TbMnO3 was probed by x-ray diffraction (XRD) and x-ray absorption spectroscopy (XAS) using synchrotron radiation. Refined XRD data enabled observation of a reduced local Jahn-Teller (JT) distortion of Mn sites within MnO6 octahedra in TbMnO3 with increasing hydrostatic pressure. A progressively increasing intensity of the white line in Mn K-edge x-ray absorption spectra of TbMnO3 was detected with increasing pressure. The absorption threshold of Mn K-edge spectra of TbMnO3 is shifted toward higher energy, whereas the pre-edge peak is slightly shifted to lower energy with increasing hydrostatic pressure. We provide spectral evidence for pressure-induced bandwidth broadening for mangnites. The enhanced intensity of the white line and the shifted absorption threshold of Mn K-edge spectra are explained in terms of a reduced JT distortion of MnO6 octahedra in compressed TbMnO3. Comparison of XAS data with full-multiple-scattering calculations using code FDMNES shows satisfactory agreement between experimental and calculated Mn K-edge spectra.en_US
dc.language.isoen_USen_US
dc.subjectelectronic structureen_US
dc.subjecthigh-pressure effectsen_US
dc.subjectJahn-Teller effecten_US
dc.subjectmultiferroicsen_US
dc.subjectsolid-state phase transformationsen_US
dc.subjectterbium compoundsen_US
dc.subjectX-ray absorption spectraen_US
dc.subjectX-ray diffractionen_US
dc.titlePressure-induced structural distortion of TbMnO3: A combined x-ray diffraction and x-ray absorption spectroscopy studyen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevB.79.165110en_US
dc.identifier.journalPHYSICAL REVIEW Ben_US
dc.citation.volume79en_US
dc.citation.issue16en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000265945200032en_US
dc.citation.woscount29en_US
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