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arXiv 0907.1296cond-mat.supr-concond-mat.str-el
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自旋密度波金属的多带超导性

Multiband Superconductivity in Spin Density Wave Metals

J. -P. Ismer, Ilya Eremin, Enrico Rossi, Dirk K. Morr, G. Blumberg

摘要:

研究了在自旋密度波背景下具有$s$ -和$d-$波对称性的多带超导的出现。我们发现,SDW相干因子重整化的超导(SC)间隙的动量依赖性,产生一个SC状态的\emph{unconventional} s波对称性。带间库珀对散射稳定了两种对称的超导性。随着SDW阶数的增加,s波态比d波态受到更强的抑制。我们的结果是普遍适用于二维系统的相称SDW。

英文摘要:

We study the emergence of multiband superconductivity with $s$- and $d-$wave symmetry on the background of spin density wave (SDW). We show that the SDW coherence factors renormalize the momentum dependence of the superconducting (SC) gap, yielding a SC state with an \emph{unconventional} s-wave symmetry. Interband Cooper pair scattering stabilizes superconductivity in both symmetries. With increasing SDW order, the s-wave state is more strongly suppressed than the d-wave state. Our results are universally applicable to two-dimensional systems with a commensurate SDW.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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