Electron scattering, charge order, and pseudogap physics in La1.6-xNd0.4SrxCuO4: An angle-resolved photoemission spectroscopy study
Electron scattering, charge order, and pseudogap physics in La1.6-xNd0.4SrxCuO4: An angle-resolved photoemission spectroscopy study
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DOI：
10.1103/physrevb.92.134524
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发表时间：
2015-10-27
影响因子：
3.7
通讯作者：
Chang, J.
中科院分区：
文献类型：
--
作者：
Matt, C. E.;Fatuzzo, C. G.;Chang, J.
本文报道了La_（1.6-x）Nd_（0.4）Sr_xCuO_4（Nd-LSCO）体系的角分辨光电发射研究。一个比较和定量的线形分析系统的演变从过掺杂制度的电荷有序相。在过掺杂侧（x = 0.20），在低于80 K冷却时，正常状态的波腹光谱间隙打开。在这个过程中，频谱权重被保留，但重新分配到更大的能量。发现这种能隙与电子散射有关，在电荷有序Nd-LSCO x = 1/8的波腹区观察到不同的线形。明显的低能量光谱权重似乎丢失。这些意见进行了讨论的频谱重量重新分配和缺口源自收费条纹订购。
We report an angle-resolved photoemission study of the charge stripe ordered La1.6-xNd0.4SrxCuO4 (Nd-LSCO) system. A comparative and quantitative line-shape analysis is presented as the system evolves from the overdoped regime into the charge ordered phase. On the overdoped side (x = 0.20), a normal-state antinodal spectral gap opens upon cooling below 80 K. In this process, spectral weight is preserved but redistributed to larger energies. A correlation between this spectral gap and electron scattering is found. A different line shape is observed in the antinodal region of charge ordered Nd-LSCO x = 1/8. Significant low-energy spectral weight appears to be lost. These observations are discussed in terms of spectral-weight redistribution and gapping originating from charge stripe ordering.