Dynamical inhomogeneity of liquid Te near the melting temperature proved by the inelastic x-ray scattering measurements
Journal of Physics: Condensed Matter 20 巻 49 号
494244-1-494244-7 頁
2008 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Dynamical inhomogeneity of liquid Te near the melting temperature proved by the inelastic x-ray scattering measurements
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| 作成者 |
Hosokawa Shinya
Matsuda Kazuhiro
Baron Q.R. Alfred
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| 収録物名 |
Journal of Physics: Condensed Matter
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| 巻 | 20 |
| 号 | 49 |
| 開始ページ | 494244-1 |
| 終了ページ | 494244-7 |
| 抄録 |
High-frequency dynamics of liquid Te near the melting temperature has been investigated by the inelastic x-ray scattering measurements. Dynamic structure factors S(Q; E) are obtained at 500, 650 and 800 ±C. Acoustic excitation is ascertained at each temperature: its Q- dependent phase velocity v(Q) switches from high-frequency value vIXS to the ultrasonic value vs at some momentum transfer (Q = Qtrans). With decreasing temperature, both the positiveness (≡ (vIXS - vs)=vs) and the effective length (≡ 2π/Qtrans) increase, which means that the structural relaxation in liquid Te changes much in this temperature region. With the aid of the thermodynamic formulation, we show that it should be an evidence of the dynamical inhomogeneity: it can be much enhanced by the M-NM transition which exists in the supercooled region. The dynamical inhomogeneity may be induced by the second critical phenomena which is similar to liquid water.
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| NDC分類 |
物理学 [ 420 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
IOP Publishing Ltd
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| 発行日 | 2008 |
| 権利情報 |
Copyright (c) Institute of Physics and IOP Publishing Limited 2009.
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0953-8984
[DOI] 10.1088/0953-8984/20/49/494244
[NCID] AA10672168
[DOI] http://dx.doi.org/10.1088/0953-8984/20/49/494244
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