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Investigation of magnetic isotope effect in high-Tc superconductors

Investigation of magnetic isotope effect in high-Tc superconductors
高温超导体中磁同位素效应的研究
批准号:
22740230
负责人:
MATSUURA Masato
金额:
$2.75万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Young Scientists (B)
财政年份:
2010
资助国家:
日本
项目状态:
已结题
起止时间:
2010 至 2011

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中文摘要
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英文摘要
In order to reveal microscopic mechanism of the formation of Cooper pairs in high transition temperature (T_c) superconducting cuprates, we have investigated Ni-doping effect on spin dynamics by inelastic neutrons scattering. We have found that the waist energy of the hourglass shaped dispersion, E_<cross>. shift to lower energies with holding linear relationship to T_c, which is analogous to the isotope effect in BCS-type superconductors. Our findings indicate that antiferromagnetic spin fluctuations near E_<cross> play an important role on the formation of Cooper pairs in high-T_c cuprates.
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わずかに過剰ドープされたLa1.82Sr0.18CuO4に見られる磁気励起の二重構造
轻微过量掺杂的 La1.82Sr0.18CuO4 中出现磁激发双结构
DOI: --
发表时间: 2012
期刊:
影响因子: --
作者: [Y. Natsume, O. Pravaz, H. Yoshida1, and M. Imai, 藤田全基,榎木勝徳,堤健之,松浦直人,山田和芳,梶本亮一,稲村泰弘,中村充孝,新井正敏,J.M. Tranquada]
通讯作者: 藤田全基,榎木勝徳,堤健之,松浦直人,山田和芳,梶本亮一,稲村泰弘,中村充孝,新井正敏,J.M. Tranquada
Ni-substitution effects on the spin dynamics and superconductivity in La_<1.85>Sr_<0.15>CuO_4
Ni取代对La_<1.85>Sr_<0.15>CuO_4自旋动力学和超导性的影响
DOI: --
发表时间: 2012
期刊: Phys. Rev. B
影响因子: --
作者: [M. Matsuura, M. Fujita, H. Hiraka, M. Kofu, H. Kimura, S. Wakimoto, T. G. Perring, C. D. Frost, and K. Yamada]
通讯作者: and K. Yamada
Neutron Scattering Study of Magnetic Impurity-Fe Effect on hourglass-like magnetic dispersions in La-based high-T_c cuprate
磁性杂质-Fe对La基高温铜酸盐沙漏状磁分散体影响的中子散射研究
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者: [松浦直人, 他]
通讯作者:
Ni-Substituution Effec cts on the S Spin Dynamics and Supercon nductivity i in La_<1.85>Sr_<0.15>CuO_4
Ni取代对La_<1.85>Sr_<0.15>CuO_4中S自旋动力学和超导性的影响
DOI: 10.1103/physrevb.86.134529
发表时间: 2012
期刊: Phys Rev. B.
影响因子: --
作者: [M. Matsuurra, M. Fujita, K. Yamada]
通讯作者: K. Yamada
11
    fMRI Study on the Common Abnormal Neural Circuitry in Schizophrenia and Epileptic Psychosis
    • 批准号:
      14570946
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.24万
    • 财政年份:
      2002
    • 负责人:
      MATSUURA Masato
    • 依托单位:
    A study on brain function and morphology changes in psychoses of epilepsy
    • 批准号:
      10670920
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $1.79万
    • 财政年份:
      1998
    • 负责人:
      MATSUURA Masato
    • 依托单位:
    海外基金