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首页> 外文期刊>Physical review >Anisotropic Quasiparticle Scattering Rates In Slightly Underdoped To Optimally Doped High-temperature La_(2-x)sr_xcuo_4 Superconductors
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Anisotropic Quasiparticle Scattering Rates In Slightly Underdoped To Optimally Doped High-temperature La_(2-x)sr_xcuo_4 Superconductors

机译:轻度掺杂至最佳掺杂的高温La_(2-x)sr_xcuo_4超导体的各向异性准粒子散射速率

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摘要

An angle-resolved photoemission study of the scattering rate in the superconducting phase of the high-temperature superconductor La_(2-x)Sr_xCuO_4 with x=0.145 and x=0.17, as a function of binding energy and momentum, is presented. We observe that the scattering rate scales linearly with binding energy up to the high-energy scale E_1 ~ 0.4 eV. The scattering rate is found to be strongly anisotropic, with a minimum along the (0,0)-(π,π) direction. A possible connection to a quantum-critical point is discussed.
机译:提出了角超分辨La-(2-x)Sr_xCuO_4的超导相中x = 0.145和x = 0.17的散射率随​​结合能和动量的变化的光发射研究。我们观察到散射率随结合能线性地缩放,直到高能级E_1〜0.4 eV。发现散射率是强各向异性的,沿着(0,0)-(π,π)方向最小。讨论了到量子临界点的可能连接。

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