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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

ESR studies of the spin dynamics in quasi-one-dimensional iodo-bridged diplatinum complex Pt_2(n-pentylCS_2)_4I

http://hdl.handle.net/2237/7140
http://hdl.handle.net/2237/7140
b8fd5ea4-8b18-4cbf-b1b7-c407c58bf556
名前 / ファイル ライセンス アクション
PhysRevB_73_245102.pdf PhysRevB_73_245102.pdf (270.5 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2006-11-30
タイトル
タイトル ESR studies of the spin dynamics in quasi-one-dimensional iodo-bridged diplatinum complex Pt_2(n-pentylCS_2)_4I
言語 en
著者 Tanaka, Hisaaki

× Tanaka, Hisaaki

WEKO 14352

en Tanaka, Hisaaki

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Kuroda, Shin-ichi

× Kuroda, Shin-ichi

WEKO 14353

en Kuroda, Shin-ichi

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Yamashita, Takami

× Yamashita, Takami

WEKO 14354

en Yamashita, Takami

Search repository
Mitsumi, Minoru

× Mitsumi, Minoru

WEKO 14355

en Mitsumi, Minoru

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Toriumi, Koshiro

× Toriumi, Koshiro

WEKO 14356

en Toriumi, Koshiro

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright: American Physical Society, All rights reserved.
抄録
内容記述 ESR measurements have been performed on a quasi-one-dimensional (Q1D) halogen-bridged binuclear metal-complex Pt_2(n-pentylCS_2)_4I which exhibits successive electronic phase transitions. Anisotropy of the ESR linewidth shows a drastic change around 215 K where the phase transition takes place between a nonmagnetic alternate-charge-polarization (ACP) state for low temperatures and a paramagnetic averaged-valence (AV) state with a relatively good electrical conductivity for higher temperatures. In the AV state, a clear minimum of the linewidth is observed around 50° from the chain direction due to the contribution of the secular 1D dipolar term varying as 3 cos^2 θ−1, where θ denotes the angle between the external magnetic field and the chain axis. In addition to the dipolar contribution, the linewidth also exhibits temperature-dependent spin-phonon contribution. These features of linewidths are consistent with those reported previously for Q1D conductors such as charge transfer salts and Pt-complexes, providing microscopic evidence for the occurrence of a Q1D conduction-electron system in the present bimetal complex. In the ACP state, the spin concentration drastically decreases due to the nonmagnetic nature of the background electronic state. The linewidth shows a uniaxial anisotropy with respect to the chain axis, which can be reasonably ascribed to the anisotropy of unresolved hyperfine structures due to Pt and iodine nuclear spins. The spin susceptibility shows a clear enhancement from Curie-type behavior, accompanied with a change of the line shape from a nearly Gaussian at 4 K to Lorentzian with motional narrowing as the temperature is raised. The results further support our previous conjecture that the observed spins are thermally excited solitons.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 The American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevB.73.245102
ISSN
収録物識別子タイプ PISSN
収録物識別子 1098-0121
書誌情報 en : Physical Review B

巻 73, 号 24, p. 245102-245102, 発行日 2006-06-15
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/7140
識別子タイプ HDL
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