Ferromagnetic spin fluctuation induced superconductivity in Sr2RuO4
Ferromagnetic spin fluctuation induced superconductivity in Sr2RuO4
复制标题
DOI：
10.1103/physrevlett.79.733
复制
发表时间：
1997-07-28
影响因子：
8.6
通讯作者：
Singh, DJ
中科院分区：
文献类型：
--
作者：
Mazin, II;Singh, DJ
基于电子结构和磁化率的第一性原理计算，我们提出了一个关于Sr2RuO4中三重态超导电性的定量模型。超导电性是由于铁磁自旋涨落引起的，这种涨落在小波矢上很强。计算的有效质量重整化、重整化磁化率和超导临界温度都与实验符合得很好。序参数在费米面的所有三个薄片上都具有相当的量级。
We propose a quantitative model for triplet superconductivity in Sr2RuO4 based on first principles calculations for the electronic structure and magnetic susceptibility. The superconductivity is due to ferromagnetic spin fluctuations that are strong at small wave vectors. The calculated effective mass renormalization, renormalized susceptibility, and superconducting critical temperature are all in good agreement with experiment. The order parameter is of comparable magnitude on all three sheets of the Fermi surface.