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arXiv 0907.5174cond-mat.str-elcond-mat.supr-con
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铜酸盐自旋玻璃相中的斜条纹

Diagonal stripes in the spin glass phase of cuprates

G. Seibold, J. Lorenzana

摘要:

本文在非限制Gutzwiller近似下研究了铜酸镧自旋玻璃相的对角无公度自旋散射起源于条纹形成的可能性。与金属相类似,两种类型的对角线条纹结构似乎是稳定的:(a)以位点为中心的织构,其沿着条纹每个位点具有一个孔,以及(b)铁磁阶梯结构,其是与金属相中的键中心条纹等效的对角线,并且平均每个条纹位点具有3/4个孔的填充。我们给出了一个详细的分析,这两个对角线纹理的稳定性与垂直的。

英文摘要:

Based on the unrestricted Gutzwiller approximation we study the possibility that the diagonal incommensurate spin scattering in the spin glass phase of lanthanum cuprates originates from stripe formation. Similar to the metallic phase two types of diagonal stripe structures appear to be stable: (a) site-centered textures which have one hole per site along the stripe and (b) ferromagnetic stair-case structures which are the diagonal equivalent to bond-centered stripes in the metallic phase and which on average have a filling of 3/4 holes per stripe site. We give a detailed analysis of the stability of both diagonal textures with regard to the vertical ones.

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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