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arXiv 1602.01113cond-mat.str-el
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T-CuO分子第一电离态的非张-莱斯单态性质

Non-Zhang-Rice singlet character of the first ionization state of T-CuO

Clemens P J Adolphs, Simon Moser, George A Sawatzky, Mona Berciu

摘要:

我们认为,tetraxanthine CuO(T-CuO)有可能最终解决长期存在的建模问题的铜酸盐物理。我们比较了T-CuO的单空穴准粒子(qp)色散的铜酸盐,在强相关($U_{dd}\rightarrow \infty$)的三带金刚砂模型的限制的框架。与CuO $_2$不同,T-CuO中的磁阻挫破坏了$C_4$旋转对称性,并导致部分倒易空间中与张-赖斯单线态图像的强烈偏离。我们的结果是一致的角度分辨光电子能谱数据,但在尖锐的矛盾,以前建议他们的一个带模型。这些差异确定T-CuO作为一种理想的材料,以测试各种方案提出的解释铜酸盐现象。

英文摘要:

We argue that tetragonal CuO (T-CuO) has the potential to finally settle long-standing modelling issues for cuprate physics. We compare the one-hole quasiparticle (qp) dispersion of T-CuO to that of cuprates, in the framework of the strongly-correlated ($U_{dd}\rightarrow \infty$) limit of the three-band Emery model. Unlike in CuO$_2$, magnetic frustration in T-CuO breaks the $C_4$ rotational symmetry and leads to strong deviations from the Zhang-Rice singlet picture in parts of the reciprocal space. Our results are consistent with angle-resolved photoemission spectroscopy data but in sharp contradiction to those of a one-band model previously suggested for them. These differences identify T-CuO as an ideal material to test a variety of scenarios proposed for explaining cuprate phenomenology.

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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