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arXiv 1104.2631cond-mat.str-elcond-mat.supr-con
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铜酸盐中正常态ARPES的极相关费米液体描述

Extremely Correlated Fermi Liquid Description of Normal State ARPES in Cuprates

G. -H. Gweon, B. S. Shastry, G. D. Gu

摘要:

用角分辨光电子能谱学(ARPES)测量的高温超导铜氧化物正常态单粒子谱函数,被认为是反常的,也是理解的关键。在这里,我们表明,一个前所未有的详细描述的数据所产生的光谱函数的极其相关的费米液态的t-J模型最近提出的Shastry。本说明书包括关于最佳掺杂的Bi $_2$ Sr $_2$ CaCu $_2$ O $_{8+δ}$的激光和常规同步加速器ARPES数据,以及关于La $_{1.85}$ Sr $_{0.15}$ CuO $_4$材料的常规同步加速器ARPES数据。{ \em它适用于具有相同物理参数值的所有数据集},满足粒子求和规则,并成功解决了色散中两个广泛讨论的“扭结”异常。

英文摘要:

The normal state single particle spectral function of the high temperature superconducting cuprates, measured by the angle resolved photoelectron spectroscopy (ARPES), has been considered both anomalous and crucial to understand. Here we show that an unprecedentedly detailed description of the data is provided by a spectral function arising from the Extremely Correlated Fermi Liquid state of the t-J model proposed recently by Shastry. The description encompasses both laser and conventional synchrotron ARPES data on optimally doped Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$, and also conventional synchrotron ARPES data on the La$_{1.85}$Sr$_{0.15}$CuO$_4$ materials. {\em It fits all data sets with the same physical parameter values}, satisfies the particle sum rule and successfully addresses two widely discussed "kink" anomalies in the dispersion.

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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