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.

与SDW型反铁磁序相关的费米面不稳定性由于反铁磁相和超导相的密切存在而备受关注。本研究通过高分辨Compton散射实验和重构方法的联合研究，从实验上揭示了反铁磁有序与关联巡游电子系统的关系。我们测量了铁基超导体和铜酸盐超导体。在铜氧化物中，我们发现欠掺杂区的导电掺杂空穴受到反铁磁序涨落的影响。

项目成果

f Electron Contribution to the Change of Electronic Structure in CeRu2Si2 with Temperature: A Compton Scattering Study

• DOI: 10.1103/physrevlett.106.136401
• 发表时间: 2011-03-28
• 期刊: PHYSICAL REVIEW LETTERS
• 影响因子: 8.6
• 作者: Koizumi, A.;Motoyama, G.;Sakurai, Y.
• 通讯作者: Sakurai, Y.

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

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