Novel dynamics of photo-induced phase transitions in systems with elastic long-range interactions

具有弹性长程相互作用的系统中光致相变的新动力学

• 批准号: 23540381
• 负责人: NISHINO Masamichi
• 金额: $ 3.16万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23540381/
• 关键词: 巨視的核生成; 核生成; 界面ダイナミクス; 臨界現象; 光誘起相転移; 弾性相互作用; 長距離相互作用; スピンクロスオーバー

Field-induced phase transitions by light irradiation, temperature change, pressure change, etc. are observed in spin-crossover (SC) complexes, etc. For understanding such phenomena, it is important to study the properties of elastic interactions caused by lattice distortion. We clarified that the nucleation mechanism for such systems can be totally different from that of the conventional nucleation theory due to the effective long-range nature of the elastic interaction. Furthermore, we showed that the critical phenomena between the low spin, high spin, and middle phases have different natures (universalities). We also demonstrated that the nature of the interface dynamics between the low and high spin phases essentially depends on the relation between dynamics of spin and that of lattice in the system.

在自旋交叉（SC）复合物等中观察到由光照射、温度变化、压力变化等引起的场诱导相变。为了理解这种现象，研究晶格畸变引起的弹性相互作用的性质是重要的。我们澄清，这种系统的成核机制可以完全不同于传统的成核理论，由于有效的长程性质的弹性相互作用。此外，我们还证明了低自旋、高自旋和中间相之间的临界现象具有不同的性质（普适性）。我们还证明了低自旋相和高自旋相之间的界面动力学本质上取决于系统中自旋动力学和晶格动力学之间的关系。

项目成果

Observation of laser ablation dynamics by soft X-ray imaging and interferometry

通过软 X 射线成像和干涉测量法观察激光烧蚀动力学

• 发表时间: 2012
• 作者: 戎修二;T. Suemoto
• 通讯作者: T. Suemoto

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Dynamics of photoinduced phase transitions studied by infrared and raman spectroscopy

用红外和拉曼光谱研究光致相变动力学

• DOI: 10.1002/pssb.201000671
• 发表时间: 2011
• 期刊: Physica Status Solidi B
• 作者: T.Suemoto;R.Fukaya;A.Asahara;M.Nakajima;H.Tbkoro;S.Ohkoshi
• 通讯作者: S.Ohkoshi

Dynamics of photoinduced phase transitions in RbMn[Fe(CN)6] studied by CN- vibration spectroscopy - Domain boundary sensitive spectroscopy

利用CN-振动光谱-畴界敏感光谱研究RbMn[Fe(CN)6]光致相变动力学

• 发表时间: 2012
• 作者: S Suga;K. Sakamoto;T. Okuda;and S. Imada(他12名);Tohru Suemoto
• 通讯作者: Tohru Suemoto

Crossover of the roughness exponent for interface growth in systems with long-range interactions due to lattice distortion

由于晶格畸变而具有长程相互作用的系统中界面生长的粗糙度指数的交叉

• DOI: 10.1103/physrevb.88.094303
• 发表时间: 2013
• 期刊: Phys. Rev. B
• 作者: M. Nishino;T. Nakada;C. Enachescu;K. Boukheddaden;S. Miyashita
• 通讯作者: S. Miyashita