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.; Rohlf, S.; Diekmann, F.K.; Buck, J.; Kalläne, M.; Rossnagel, K.; Rienks, E.; Granata, V.; Fittipaldi, R.; Vecchione, A.; Ohgi, T.; Kawamata, T.; Adachi, T.; Koike, Y.; Fujimori, A.; Hoesch, M.; Chang, J.: Oxide Fermi liquid universality revealed by electron spectroscopy. Physical Review B 102 (2020), p. 245153/1-7
10.1103/physrevb.102.245153
Open Access Version (externer Anbieter)
Abstract:
We present a combined soft x-ray and high-resolution vacuum-ultraviolet angle-resolved photoemission spectroscopy study of the electron-overdoped cuprate Pr1.3−𝑥La0.7Ce𝑥CuO4 (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.