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All the three emission bands (I, II and III) due to the Jahn-Teller split states of a self-trapped exciton (STE) located on the (WO4)(2-) complex anion are found to exhibit significant polarizations in the ac plane. The main band II peaking at 425 nm is polarized with E parallel to c at low temperatures (T \u003c 100 K), but changes its polarization from E parallel to c to E perpendicular to c at T \u003e 150 K. Band III at 450 nm is polarized with E perpendicular to c at T = 230 and 300 K. The degree of polarization of these two bands does not depend on the polarization of excitation light. On the other hand, band I at 407 nm is polarized with E perpendicular to c (E parallel to c) under the photoexcitation polarized parallel (perpendicular) to the c axis, in the temperature range of T = 150-300 K. The observed polarization characteristics of three emission bands invoke further lowering of symmetry of tetrahedral (WO4)(2-) ions due to the uniaxially compressive crystal field, in addition to the Jahn-Teller distortion. 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Observation of polarized luminescence from Jahn-Teller split states of self-trapped excitons in PbWO₄ by time-resolved spectroscopy
http://hdl.handle.net/10091/3828
82de979a-3ae8-49fe-b360-81064b852680
名前 / ファイル | ライセンス | アクション | |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-01-22 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Observation of polarized luminescence from Jahn-Teller split states of self-trapped excitons in PbWO₄ by time-resolved spectroscopy | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | photoluminescence | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | polarization | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | time-resolved spectroscopy | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Jahn-Teller effect | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | adiabatic potential energy surface | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | self-trapped exciton | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | PbWO₄ | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Itoh, Minoru
× Itoh, Minoru× Aoki, Tomonori |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal of physics. Condensed matter. 22(4):045503 (2010) | |||||
書誌情報 |
Journal of physics. Condensed matter 巻 22, 号 4, p. 1-10, 発行日 2010-02 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Time-resolved luminescence spectra of oriented PbWO₄ crystals have been measured for polarizations with the electric vector parallel to the crystallographic c axis ( E ∥ c) and perpendicular to it (E ⊥ c). All the three emission bands (I, II and III) due to the Jahn-Teller split states of a self-trapped exciton (STE) located on the (WO₄)²⁻ complex anion are found to exhibit significant polarizations in the ac plane. The main band II peaking at 425 nm is polarized with E ∥ c at low temperatures (T < 100 K), but changes its polarization from E ∥ c to E ⊥ c at T > 150 K. Band III at 450 nm is polarized with E ⊥ c at T = 230 and 300 K. The degree of polarization of these two bands does not depend on the polarization of excitation light. On the other hand, band I at 407 nm is polarized with E ⊥ c ( E ∥ c) under the photoexcitation polarized parallel (perpendicular) to the c axis, in the temperature range of T = 150-300 K. The observed polarization characteristics of three emission bands invoke further lowering of symmetry of tetrahedral (WO₄)²⁻ ions due to the uniaxially compressive crystal field, in addition to the Jahn-Teller distortion. The sublevels of the STEs responsible for the PbWO₄ luminescence are assigned on the basis of a group-theoretical consideration. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0953-8984 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10672168 | |||||
PubMed | ||||||
関連識別子 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=search&DB=pubmed&term=21386318 | |||||
関連名称 | ||||||
関連名称 | 21386318 | |||||
DOI | ||||||
関連識別子 | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/0953-8984/22/4/045503 | |||||
関連名称 | ||||||
関連名称 | 10.1088/0953-8984/22/4/045503 | |||||
権利 | ||||||
権利情報 | Copyright (c) 2010 IOP Publishing | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
WoS | ||||||
表示名 | Web of Science | |||||
URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000273552400017 |