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arXiv 0706.1897cond-mat.str-el
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接近电荷序绝缘体跃迁的金属中的非局域关联

Non-local correlations in metals close to a charge order insulator transition

Jaime Merino

摘要:

用细胞动力学平均场论研究了1/4填充扩展哈伯德模型中最近邻库仑排斥V引起的电荷有序跃迁.我们发现在压控振荡器处存在向强重整化电荷有序费米液体的转变,在VMI>压控振荡器处存在金属-绝缘体的转变。短程反铁磁性与CO跃迁相伴出现。接近电荷有序绝缘体的费米面变形和电子的散射率发展的费米面上的动量依赖。

英文摘要:

The charge ordering transition induced by the nearest-neighbor Coulomb repulsion, V, in the 1/4-filled extended Hubbard model is investigated using Cellular Dynamical Mean-Field Theory. We find a transition to a strongly renormalized charge ordered Fermi liquid at VCO and a metal-to-insulator transition at VMI>VCO. Short range antiferromagnetism occurs concomitanly with the CO transition. Approaching the charge ordered insulator the Fermi surface deforms and the scattering rate of electrons develops momentum dependence on the Fermi surface.

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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