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Universal scaling of length, time, and energy for cuprate superconductors based on photoemission measurements of Bi_2Sr_2CaCu_2O_(8+δ)

机译:基于Bi_2Sr_2CaCu_2O_(8 +δ)的光发射测量,对铜酸盐超导体的长度,时间和能量进行通用缩放

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摘要

A microscopic scaling relation linking the normal and superconducting states of the cuprates in the presence of a pseudogap is presented using angle-resolved photoemission spectroscopy. This scaling relation, complementary to the bulk universal scaling relation embodied by Homes' law, explicitly connects the momentum-dependent amplitude of the d-wave superconducting order parameter at T ~0 to quasiparticle scattering mechanisms operative at T approx> T_c. The form of the scaling is proposed to be a consequence of the marginal Fermi-liquid phenomenology and the inherently strong dissipation of the normal pseudogap state of the cuprates.
机译:使用角度分辨光发射光谱法,在假间隙存在下,将铜酸盐的正常和超导状态链接在一起的微观比例关系。这种比例关系是霍姆斯定律所体现的整体通用比例关系的补充,将d波超导阶参数在T〜0时与动量有关的幅度明确地联系到在T近似> T_c时起作用的准粒子散射机制。缩放的形式被认为是边缘费米-液现象学和铜酸盐的正常伪间隙状态固有的强耗散的结果。

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