Oxide Fermi liquid universality revealed by electron spectroscopy
Oxide Fermi liquid universality revealed by electron spectroscopy
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电子能谱揭示氧化物费米液体的普遍性
DOI：
10.1103/physrevb.102.245153
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发表时间：
2020
影响因子：
3.7
通讯作者：
Chang J. et al.
中科院分区：
文献类型：
--
作者：
Horio M.;Kramer K. P.;Wang Q.;Zaidan A.;von Arx K.;Sutter D.;Matt C. E.;Sassa Y.;Plumb N. C.;Shi M.;Hanff A.;Mahatha S. K.;Bentmann H.;Reinert F.;M.;Rossnagel K.;Rienks E.;Vecchione A.;Kawamata T.;Adachi T.;Koike Y.;Fujimori A.;Hoesch M.;Chang J. et al.
我们提出了一个软X射线和高分辨率真空紫外角分辨光电子能谱研究的电子过掺杂铜酸盐（PLCCO）。它的高度二维能带结构的证明，使平面内的自能量的电子-电子散射为主的精确测定。通过对这种自能和费米液体截止能级的分析，我们发现，与空穴掺杂的铜氧化物相比，PLCCO具有动量各向同性和相对较弱的电子关联。然而，从多个氧化物系统中提取的自能联合收割机证明了准粒子散射率与质量之间的对数发散关系。这构成了一个光谱版本的Kadowaki-Woods关系的一个重要优点-费米液体准粒子的寿命和质量被设置由一个单一的能量尺度的演示。
We present a combined soft x-ray and high-resolution vacuum-ultraviolet angle-resolved photoemission spectroscopy study of the electron-overdoped cuprate(PLCCO). Demonstration of its highly two-dimensional band structure enabled precise determination of the in-plane self-energy dominated by electron-electron scattering. Through analysis of this self-energy and the Fermi liquid cut-off energy scale, we find—in contrast to hole-doped cuprates—a momentum isotropic and comparatively weak electron correlation in PLCCO. Yet, the self-energies extracted from multiple oxide systems combine to demonstrate a logarithmic divergent relation between the quasiparticle scattering rate and mass. This constitutes a spectroscopic version of the Kadowaki-Woods relation with an important merit—the demonstration of Fermi liquid quasiparticle lifetime and mass being set by a single energy scale.