Electronic Dynamics Study by NMR using isotope substitution

使用同位素替代通过 NMR 进行电子动力学研究

• 批准号: 18540306
• 负责人: KAWAMOTO Atsushi
• 金额: $ 2.24万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18540306/
• 关键词: NMR; Electronic Dynamics; Deuterium Substitution; Nuclear Quadrupole; TTF-TCNQ; TTF=TCNQ; 重水素

In order to investigate the charge dynamics, we planned to ^2D-NMR on TTF-TCNQ salts. TTF-TCNQ is a most famous charge transfer salt, which shows CDW transition at low temperature. However there are few spectroscopic studies on the dynamics o CDW. NMR is one of the most powerful tools for magnetism. NMR also can probe the charge dynamics via nuclear quadrupole interaction. Therefore ^2D-NMR is good idea for the charge dynamics. ^2D-NMR probes the both of the magnetism and the charge. On the other hands, ^1H-NMR probes only the magnetism. Comparing the results ^2D and ^1H NMR on same sites, we can extract the information of only charge. First we synthesized the ^2D substituted TTF molecule and prepared the single crystal of TTF-TCNQ complex. We also tried to synthesize the 2D substituted TTF. We found more easy synthetic route for TCNQ-d. ^2D NMR on the complex is now in progress.

为了研究电荷动力学，我们计划对TTF-TCNQ盐进行二维核磁共振。TTF-TCNQ是最著名的电荷转移盐，在低温下呈现CDW转变。然而，对CDW动力学的光谱研究很少。核磁共振是最强大的磁性工具之一。核磁共振还可以通过核四极相互作用探测电荷动力学。因此，二维核磁共振是研究电荷动力学的好方法。2D-NMR同时探测磁性和电荷。另一方面，^1H-NMR只探测磁性。比较相同位置上的^2D和^1H核磁共振结果，我们可以提取出只有电荷的信息。首先合成了^2D取代的TTF分子，制备了TTF- tcnq配合物的单晶。我们还尝试合成了二维取代的TTF。我们发现了更容易合成TCNQ-d的路线。^目前正在对该复合体进行二维核磁共振。

项目成果

SQUID-magnetometry study of the P-T phase diagram of κ-[(BEDT-TTF)_<(1-x)>(BEDSe-TTF)_x]_2 Cu[N(CN)_2]Br

SQUID磁力法研究κ-[(BEDT-TTF)_<(1-x)>(BEDSe-TTF)_x]_2 Cu[N(CN)_2]Br的P-T相图

• 发表时间: 2006
• 期刊: J. Low Temp. Phys. 142 (3-4)
• 作者: Y. V. Sushko;S. O. Leontsev;O. B. Korneta;A. Kawamoto
• 通讯作者: A. Kawamoto

Single Crystal ^<13>C-NMR Study on "β'-(BEDT TTF)_2ICI_2

“β-(BEDT TTF)_2ICI_2单晶^<13>C-NMR研究

• 发表时间: 2006
• 作者: Y. Eto;Y. Imai;A. Kawamoto and K. Kumagai
• 通讯作者: A. Kawamoto and K. Kumagai

Crystal growth of 50mg-class single crystals of β-(BEDT-TTF)_2ICl_2 and crystal evaluation

50mg级β-(BEDT-TTF)_2ICl_2单晶的晶体生长及晶体评价

• 发表时间: 2006
• 期刊: J. Low Temp. Phys. 142(3-4)
• 作者: H. Taniguchi;R. Sato;K. Satoh;A. Kawamoto;H. Okamoto;T. Kobayashi;K. Mizuno
• 通讯作者: K. Mizuno

SQUID-magnetometry study of the P-T phase diagram of κ-[(BEDT-TTF)_<(1-x)>(BEDSe-TTF)_<xl2> Cu [N(CN)_2] Br

SQUID 磁力法研究 κ-[(BEDT-TTF)_<(1-x)>(BEDSe-TTF)_<xl2> Cu [N(CN)_2] Br 的 P-T 相图

• 发表时间: 2006
• 期刊: J. Low Temp. Phys. 142(3-4)
• 作者: Y.V. Sushko;S.O. Leontsev;O.B. Korneta;A. Kawamoto
• 通讯作者: A. Kawamoto

"Charge disproportionaion of organic conductor α-(BEDT-TTF)_2RbHg (SCN)_4"

“有机导体α-(BEDT-TTF)_2RbHg (SCN)_4的电荷歧化”

• 发表时间: 2007
• 作者: T. Kawai^*; A. Kawamoto and K. Kumagai
• 通讯作者: A. Kawamoto and K. Kumagai