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.

通过光照射，温度变化，压力变化等通过旋转（SC）复合物等观察到了野外诱导的相变，为了理解这种现象，研究由晶格失真引起的弹性相互作用的特性很重要。我们澄清说，由于弹性相互作用的有效远距离性质，此类系统的成核机制可能与常规成核理论完全不同。此外，我们表明，低自旋，高自旋和中阶段之间的临界现象具有不同的本质（普遍性）。我们还证明了低自旋相之间的界面动力学的性质本质上取决于自旋动力学与系统中晶格的动力学之间的关系。

项目成果

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

NIMS研究者情報データベース

NIMS研究员信息数据库

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

Critical temperature and correlation length of an elastic interaction model for spin-crossover materials

自旋交叉材料弹性相互作用模型的临界温度和相关长度

• DOI: 10.1103/physrevb.85.054408
• 发表时间: 2012
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Taro Nakada;Takashi Mori;Seiji Miyashita;Masamichi Nishino;Synge Todo;William Nicolazzi;Per Arne Rikvold
• 通讯作者: Per Arne Rikvold

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