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arXiv 1701.06360cond-mat.str-el
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自旋序对Hund和Hubbard耦合的半自旋Falicov-Kimball模型超导关联的影响

Influence of spin ordering on superconducting correlations in the spin-one-half Falicov-Kimball model with Hund and Hubbard coupling

Pavol Farkasovsky

摘要:

本文采用广义自旋半Falicov-Kimball模型,考虑Hund和Hubbard耦合,研究了自旋有序对强关联电子和自旋系统超导关联的影响。发现铁磁自旋团簇(线、带、畴)抑制d波通道中的超导关联,而反铁磁自旋团簇则完全相反。由于反铁磁自旋有序的超导关联的增强是在轴向条纹相的3倍,甚至是在相分离相的8倍。

英文摘要:

The generalized spin-one-half Falicov-Kimball model with Hund and Hubbard coupling is used to examine effects of spin ordering on superconducting correlations in the strongly correlated electron and spin systems. It is found that the ferromagnetic spin clusters (lines, bands, domains) suppress the superconducting correlations in the d-wave chanel, while the antiferromagnetic ones have the fully opposite effect. The enhancement of the superconducting correlations due to the antiferromagnetic spin ordering is by factor 3 in the axial striped phase and even by the factor 8 in the phase segregated phase.

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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