Muon-spin-relaxation study of the relationship between the spin correlation and superconductivity in iron-based and high-Tc cuprate superconductors
铁基和高温铜酸盐超导体自旋关联与超导关系的μ子自旋弛豫研究
基本信息
- 批准号:23540399
- 负责人:
- 金额:$ 3.24万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2011
- 资助国家:日本
- 起止时间:2011 至 2013
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In order to investigate the relationship between the spin correlation and superconductivity, we have performed muon-spin-relaxation measurements using high-quality single crystals of the impurity-substituted iron-based superconductor Fe1-y(Co,Ni,Zn)ySe0.3Te0.7 and of the electron-doped high-Tc cuprate Pr1.3-xLa0.7CexCuO4+d. Impurity-induced development of the spin correlation has been found in Fe1-y(Co,Ni,Zn)ySe0.3Te0.7, suggesting the orbital fluctuations as a glue of electron pairs. In Pr1.3-xLa0.7CexCuO4+d, it has been found that the superconductivity coexists with a short-range magnetic order at low temperatures. This novel coexistence can be understood in terms of the band picture including the strong electron correlation. Accordingly, it has been concluded that in cuprates, the spin correlation plays an important role on the appearance of superconductivity and that in iron-based superconductors, the appearance of the superconductivity is not so affected by the spin correlation.
为了研究自旋相关与超导性之间的关系,我们利用掺杂铁基超导体Fe1-y(Co,Ni,Zn)ySe0.3Te0.7和掺杂电子的高tc铜Pr1.3-xLa0.7CexCuO4+d的高质量单晶进行了介子自旋弛豫测量。在Fe1-y(Co,Ni,Zn)ySe0.3Te0.7中发现了杂质诱导的自旋相关的发展,表明轨道波动是电子对的粘合。在Pr1.3-xLa0.7CexCuO4+d中,发现在低温下超导性与短程磁序共存。这种新的共存现象可以用包含强电子相关的能带图来理解。由此得出结论,在铜酸盐中,自旋相关对超导性的出现起重要作用,而在铁基超导体中,自旋相关对超导性的出现影响不大。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
μSRからみたLa2-xSrxCu1-yFeyO4において誘起された磁気秩序
从 μSR 观察到 La2-xSrxCu1-yFeyO4 中诱导的磁序
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:Y. Utsumi;H. Nagata;J. Kodama;H. Sato;T. Yamashita;S. Ohara;M. Arita;H. Hayashi;J. Jiang;T. Habuchi;D. Hirayama;H. Iwasawa;K. Shimada;H. Namatame;M. Taniguchi;鈴木謙介
- 通讯作者:鈴木謙介
μSRからみたLa2-xSrxCu1-yFeyO4におけるFe置換で誘起された磁気秩序
从 μSR 观察到 La2-xSrxCu1-yFeyO4 中 Fe 取代引起的磁序
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:東中隆二;他5名;足立匡;丸山勲;鈴木謙介
- 通讯作者:鈴木謙介
Electron correlation and annealing effects in FeSe1-xTex studied by thermal conductivity
通过热导率研究 FeSe1-xTex 中的电子关联和退火效应
- DOI:
- 发表时间:2013
- 期刊:
- 影响因子:0
- 作者:村岡祐治;吉田祥;脇田高徳;横谷尚睦;M. Ohno
- 通讯作者:M. Ohno
T'型銅酸化物と鉄カルコゲナイド超伝導体におけるスピンゆらぎのμSRによる研究
T型铜酸盐和铁硫属化物超导体中自旋涨落的μSR研究
- DOI:
- 发表时间:2013
- 期刊:
- 影响因子:0
- 作者:K. Matsuhira;K. Kuroda;T. Sakakibara;M. Wakeshima;Y. Hinatsu;足立匡
- 通讯作者:足立匡
Evolution of the Electronic State through the Reduction Annealing in Electron-Doped Pr1.3-xLa0.7CexCuO4+d (x=0.10) Single Crystals: Antiferromagnetism, Kondo Effect and Superconductivity
电子掺杂 Pr1.3-xLa0.7CexCuO4 d (x=0.10) 单晶中电子态通过还原退火的演化:反铁磁性、近藤效应和超导
- DOI:
- 发表时间:2013
- 期刊:
- 影响因子:1.7
- 作者:T. Adachi;Y. Mori;M. Kato;T. Nishizaki;T. Sasaki;N. Kobayashi and Y. Koike
- 通讯作者:N. Kobayashi and Y. Koike
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