Development of high pressure cell and study of pressure on the strong correlated system

高压单元的研制及强关联系统压力研究

• 批准号: 16204022
• 负责人: UWATOKO Yoshiya
• 金额: $ 30.53万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16204022/
• 关键词: Cubic Anvil Cell; Diamond Anvil Cell; Piston Cylinder Cell; High Pressure Apparatus; Pressure Induced Phase Transition; Strong Correlated System; Heavy Fermion; Sunerconductor; 圧力効果; 重い電子; 超高圧力; 圧力誘起超伝導

The combination of low temperature, high pressure and magnetic field provides a powerful means to access abroad range of energy scales and thus study physical phenomena such as metal-insulator transitions, pressure induced superconductivity and the evolution of the Fermi surface as a material is driven into the superconducting state. We have been studying to understanding of a new phenomenon to occur under going interplay (and/or competition) between magnetism and superconductivity and pressure induced novel phase transitions etc.A micro high pressure cell and a cubic anvil high pressure cell have been developed ix measurements of specific heat, magnetization and electrical resistivity at low temperature, respectively. This small cell device can be used up to 2 GPa. And, cubic anvil high pressure cell can be used up to 8GPa at 0.57K.We discover that the one-dimensional organic conductor (TMTTF)_2XF_6(X=Sb, As), ZrTe_3 and YbCo_2Zn_20 are pressure induced superconductor; pressure induced reentrant superconductor and pressure induced magnetic compound, respectively.

低温、高压和磁场的结合提供了一种强有力的手段，可以进入广泛的能量尺度范围，从而研究诸如金属-绝缘体转变、压力诱导超导性和费米面在材料被驱动进入超导状态时的演化等物理现象。我们一直在研究磁与超导电性的相互作用（或竞争）以及压力诱导的新相变等新现象。我们研制了一个微型高压室和一个立方砧高压室，分别测量了低温下的比热、磁化强度和电阻率。这种小型电池设备可以使用高达2 GPa。发现一维有机导体（TMTTF）_2XF_6（X=Sb，As）、ZrTe_3和YbCo_2Zn_20分别是压感超导体、压感重入超导体和压感磁性化合物。

项目成果

Relation between superconductivity and superstructure in Ce_2RhIn_8

Ce_2RhIn_8超导性与超结构的关系

• 发表时间: 2007
• 期刊: J. Magn. Magn. Mater. 310
• 作者: K.McElroy;H.Takagi;et al.;M.Yoshino;M. Koeda
• 通讯作者: M. Koeda

Specific heat of superstoichiometric samarium dihydride (SmH_<2+δ>)"J. Magn. Magn. Mater. 310 (2007) E65-E67

超化学计量二氢化钐的比热(SmH_<2+δ>)”J.Magn.Magn.Mater.310(2007)E65-E67

• 发表时间: 2007
• 期刊: J. Magn. Magn. Mater 310
• 作者: E.Matsuoka;4 co-authors;O. Nakamura
• 通讯作者: O. Nakamura

A uniaxial pressure cell for neutron diffraction investigation and its use in studying the single-crystalline Sr_3RU_2O_7 compound

用于中子衍射研究的单轴压力盒及其在单晶Sr_3RU_2O_7化合物研究中的应用

• 发表时间: 2005
• 期刊: JOURNAL OF PHYSICS-CONDENSED MATTER 17(40)
• 作者: K.Sekiguchi;M.Shimizu;E.Saitoh;H.Miyajima;Aso N
• 通讯作者: Aso N

Investigation of YblnCu4 at pressures to 7G Pa

在 7G Pa 压力下研究 YblnCu4

• 发表时间: 2006
• 期刊: Physica B : Condensed Matter (Amsterdam, Netherlands) 378-380
• 作者: Kurita;N.; Kano;M.; Hedo;M.; Uwatoko;Y.; Sarrao;J.L.; Thompson;J.D.; Tozer,S.W.
• 通讯作者: J.D.; Tozer,S.W.

Superconductivity of PrOs4Sb12 at pressures to 10GPa

PrOs4Sb12 在 10GPa 压力下的超导性

• DOI: 10.1016/j.jmmm.2006.10.255
• 发表时间: 2007
• 期刊: Journal of Magnetism and Magnetic Materials
• 影响因子: 2.7
• 作者: N. Kurita;M. Hedo;M. Kano;T. Fujiwara;Y. Uwatoko;S. Tozer
• 通讯作者: S. Tozer