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.
Horio, M., Kramer, K.P., Wang, Q., Zaidan, A., Von Arx, K., Sutter, D., et al. (2020). Oxide Fermi liquid universality revealed by electron spectroscopy. PHYSICAL REVIEW. B, 102(24), 1-7 [10.1103/PhysRevB.102.245153].
Oxide Fermi liquid universality revealed by electron spectroscopy
Granata V.;
2020-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
