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arXiv 2004.12785cond-mat.supr-concond-mat.str-el
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高温超导铜氧化物的电阻率

The Resistivity of High-Tc Cuprates

R. Arouca, E. C. Marino

摘要:

我们表明,在每个阶段的高Tc铜酸盐的电阻率是一个特殊的情况下,从久保公式推导出的一般表达式。我们得到,特别是,在奇怪的金属(SM)和上赝能隙(PG)阶段的T-线性行为,纯$T^2$,费米液体(FL)的行为观察到的强过掺杂制度,以及$T^{1+δ}$行为,插入两者的交叉。我们计算系数:a)$T$在线性区域中的变化,并表明它与PG温度$T^*(x)$成比例; b)$T^2$ -项在FL区域中,不调整任何参数;和c)$T^{1.6}$项在交叉区域中,所有这些都与实验数据非常一致。从我们的模型中,我们能够推断铜酸盐的电阻率是由激子对空穴的散射引起的,激子是在空穴掺杂到电子背景中时自然形成的。

英文摘要:

We show that the resistivity in each phase of the High-Tc cuprates is a special case of a general expression derived from the Kubo formula. We obtain, in particular, the T-linear behavior in the strange metal (SM) and upper pseudogap (PG) phases, the pure $T^2$, Fermi liquid (FL) behavior observed in the strongly overdoped regime as well as the $T^{1+δ}$ behavior that interpolates both in the crossover. We calculate the coefficients: a) of $T$ in the linear regime and show that it is proportional to the PG temperature $T^*(x)$; b) of the $T^2$-term in the FL regime, without adjusting any parameter; and c) of the $T^{1.6}$ term in the crossover regime, all in excellent agreement with the experimental data. From our model, we are able to infer that the resistivity in cuprates is caused by the scattering of holes by excitons, which naturally form as holes are doped into the electron background.

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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