Besides the mechanism responsible for high critical temperature superconductivity, the grand unresolved issue of the cuprates is the occurrence of a strange metallic state above the so-called pseudogap temperature T^*. Even though such state has been successfully described within a phenomenological scheme, the so-called Marginal Fermi-Liquid theory, a microscopic explanation is still missing. However, recent resonant X-ray scattering experiments identified a new class of charge density fluctuations characterized by low characteristic energies and short correlation lengths, which are related to the well-known charge density waves. These fluctuations are present over a wide region of the temperature-vs-doping phase diagram and extend well above T^*. Here we investigate the consequences of charge density fluctuations on the electron and transport properties and find that they can explain the strange metal phenomenology. Therefore, charge density fluctuations are likely the long-sought microscopic mechanism underlying the peculiarities of the metallic state of cuprates.

除了导致高临界温度超导的机制外，铜酸盐的一个尚未解决的主要问题是在所谓的伪间隙温度T ^*之上出现了奇怪的金属态。尽管这种状态已在现象学方案（即所谓的边际费米液体理论）中成功描述，但仍缺少微观解释。但是，最近的共振X射线散射实验确定了一种新型的电荷密度波动，其特征是特征能量低，相关长度短，这与众所周知的电荷密度波有关。这些波动存在于温度与掺杂相图的较宽范围内，并在T ^*之上延伸^。。在这里，我们研究了电荷密度波动对电子和传输特性的影响，发现它们可以解释奇怪的金属现象。因此，电荷密度的波动很可能是潜在的长期研究的微观机制，其机制是铜酸盐的金属态的特殊性。