Direct Probing of Fermi Surface Instability with SDW-type Anti-ferromagnetic Order

用SDW型反铁磁序直接探测费米表面不稳定性

• 批准号: 22540382
• 负责人: SAKURAI Yoshiharu
• 金额: $ 2.75万
• 依托单位: 公益財団法人高輝度光科学研究センター (2012)Japan Synchrotron Radiation Research Institute (2010-2011)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540382/
• 关键词: 強相関電子系; 金属物性; 超伝導材料・素子; 物性実験; 放射線; X線; 粒子線; 放射線・Ｘ線・粒子線; 超伝層材料・素子; 放射線・X線・粒子線

Fermi surface instability associated with SDW-type anti-ferromagnetic order draws much attention because the anti-erromagnetic phase and superconducting phase exist closely each other. In this study we have performed joint studies of high-resolution Compton scattering experiment and reconstruction method, and have revealed experimentally the relation between anti-ferromagnetic order and correlated itinerant electron system. We measured iron-based superconductors and cuprate superconductors. In the cuprates we found that the conducting doped holes in the under-doped region are influenced by the fluctuating anti-ferromagnetic order.

由于反铁磁相和超导相紧密存在，与SDW型反铁磁序相关的费米表面不稳定性备受关注。本研究通过高分辨率康普顿散射实验和重构方法的联合研究，通过实验揭示了反铁磁序与相关巡回电子系统之间的关系。我们测量了铁基超导体和铜酸盐超导体。在铜酸盐中，我们发现欠掺杂区域中的导电掺杂空穴受到波动的反铁磁序的影响。

项目成果

Competing Ferromagnetism and Superconductivity on FeAs Layers in EuFe_2(As_<0.73>P_<o.27>)_2

EuFe_2(As_<0.73>P_<o.27>)_2 中 FeAs 层的铁磁性和超导性竞争

• 发表时间: 2010
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Aamir Ahmed;M.Itou;Shenggo Xu;Zhu'an Xu;Guanghan Cao;Y.Sakurai;James Penner-Hahn;Aniruddha Deb
• 通讯作者: Aniruddha Deb

Comprting Ferromagnetism and Superconductivity on FeAs Layers in EuFe_2(As_<0.73>P_<0.27>)_2

计算EuFe_2(As_<0.73>P_<0.27>)_2中FeAs层的铁磁性和超导性

• 发表时间: 2010
• 期刊: Phys. Rev. Lett.
• 作者: Aamir Ahmed;M. Itou;Shenggo Xu;Zhu'an Xu;Guanghan Cao;Y. Sakurai;James Penner-Hahn and Aniruddha Deb
• 通讯作者: James Penner-Hahn and Aniruddha Deb

Evolving Electronic Structure of High-Tc Cuprates Studied by Compton Scattering

通过康普顿散射研究高温铜酸盐的演化电子结构

• 发表时间: 2012
• 作者: S. Hosokawa;S. Munejiri;M. Inui;Y. Kajihara;W. -C. Pilgrim;A. Q. R. Baron;F. Shimojo;and K. Hoshino;田嶋尚也;O.Sano;Y. Sakurai
• 通讯作者: Y. Sakurai

Evolving Electronic Structure of High-Tc Cuprates Revealed by Compton Scattering

康普顿散射揭示高温铜酸盐电子结构的演变

• 发表时间: 2011
• 作者: A.Yamane;F.Shimojo;K.Hoshino;Satoshi Yukawa and Shin-ichi Ito;Y.Sakurai
• 通讯作者: Y.Sakurai

Imaging Doped Holes in a Cuprate Superconductor with High-Resolution Compton Scattering

使用高分辨率康普顿散射对铜酸盐超导体中的掺杂孔进行成像

• 发表时间: 2011
• 期刊: Science 332
• 作者: Y.Sakurai;M.Fujita;K.Yamada
• 通讯作者: K.Yamada