Creation and control of charge cluster glass phases

电荷簇玻璃相的产生和控制

• 批准号: 21340106
• 负责人: TERASAKI Ichiro
• 金额: $ 11.23万
• 依托单位: Nagoya University (2010-2011)Waseda University (2009)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21340106/
• 关键词: 強相関系; 強相関電子; 電荷秩序; 巨大応答; 不均一分布; グラス相; 本質的不均一; 有機導体; 遷移金属酸化物; 非平衡状態

Charge order is a kind of electronic phase that is realized in strongly correlated electron systems, which is driven by the inter-site Coulomb repulsion. Thus depending on the anisotropy of the inter-site Coulomb repulsion, conduction electrons are regularly localized with different patterns. Some of them will compete and coexist to show a glass-like pattern consisting of charge-ordered domains. The principal investigator calls this“charge cluster glass", and have tried to create and control this new electron phase. Some of the results highlights(1) a charge cluster glass is created in rapidly-cooledθ-(BEDT-TTF) 2RbZn(SCN) 4, and the nonlinear conduction in this glass phase is controlled,(2) anomalous dielectric relaxation is discovered inκ-(BEDT-TTF) 2Cu2(CN) 3, which is ascribed to a cluster glass phase of different antiferroelectric domains,(3) a new type of cluster glass phase is discovered inβ-(meso-DMBEDT-TTF) 2PF6, which is composed of dimmer Mott insulator phase and charge ordered phase. Through these findings, the principal investigator has clarified that the cluster glass phases discovered in this research share generic features in common as a competing ordered state in strongly correlated electron systems.

电荷序是在强关联电子系统中实现的一种电子相，由位点间库仑斥力驱动，因此，根据位点间库仑斥力的各向异性，传导电子以不同的模式规则地定域。其中一些会竞争并共存，呈现出由电荷有序域组成的玻璃状图案，首席研究员将其称为“电荷簇玻璃”，并尝试创建和控制这种新的电子相。研究亮点(1)在快速冷却的θ-(BEDT-TTF) 2RbZn(SCN) 4中产生电荷团簇玻璃，并控制该玻璃相中的非线性传导，(2)在κ-(BEDT- TTF) 2Cu2(CN) 3，归因于不同反铁电畴的簇玻璃相，(3)发现了一种新型簇玻璃相inβ-(meso-DMBEDT-TTF) 2PF6，由调光莫特绝缘体相和电荷有序相组成。通过这些发现，主要研究人员澄清了本研究中发现的簇玻璃相与竞争性玻璃相具有共同的特征。强相关电子系统中的有序状态。

项目成果

A mechanism of inverter effect in the organic thyristor

有机晶闸管逆变效应的机理

• 发表时间: 2010
• 作者: Y. Nemoto;Y. Ikeda;T. Nishikata;G. Ano;K. Araki;K. Mitsumoto;M. Akatsu;T. Goto;N. Kurotaki;N. Takeda;I.Terasaki
• 通讯作者: I.Terasaki

有機導体の電荷秩序と電流効果

有机导体中的电荷顺序和电流效应

• 发表时间: 2010
• 作者: S.Nishihara;S.Mori;et al.;寺崎一郎
• 通讯作者: 寺崎一郎

Nonequilibrium Charge Ordering inθ-(BEDT-TTF)_2MM'(SCN)_4(M=Rb, Cs ; M'=Co, Zn)

θ-(BEDT-TTF)_2MM(SCN)_4(M=Rb, Cs; M=Co, Zn) 中的非平衡电荷排序

• 发表时间: 2010
• 期刊: Physica
• 作者: I. Terasaki;S. Tasaki;S. Ajisaka;Y. Nogami;N. Hanasaki;M. Watanabe;H. Mori;and T. Mori
• 通讯作者: and T. Mori

A mechanism of inverter effect in the organic thyristor ISSP-MDF Workshop

有机晶闸管中逆变效应的机理 ISSP-MDF 研讨会

• 发表时间: 2010
• 作者: I. Terasaki;T. Suko;H. Mori;T. Mori;M. Watanabe and Y. Nogami
• 通讯作者: M. Watanabe and Y. Nogami

Nonlinear conduction phenomena in the Mott insulator Ca_2RuO_2

莫特绝缘体Ca_2RuO_2中的非线性传导现象

• 发表时间: 2012
• 作者: R. Okazaki;Y. Nishina;Y. Yasui;I. Terasaki;F. Nakamura;Y. Kimura;M. Sakaki;T. Suzuki
• 通讯作者: T. Suzuki