Strong evidence for the three-dimensional Fermi liquid behaviour of quasiparticles in high-$T_{\mathrm{C}}$ cupurates

Abstract

It is generally believed that behaviours of quasiparticles (holes) in high-$T_{\mathrm{C}}$ cupurates should be attributed to the two-dimensional (2D) electronic states in the CuO${}_2$ planes. The various anomalies of the transport coefficients for temperatures above $T_{\mathrm{C}}$ are long-standing insoluble puzzles and cause serious controversy. Here we reanalyse the published experimental date of LSCO cupurates. We find that the normal-state susceptibility, resistivity, Hall coefficient etc vary precisely as $T^2\ln T$ as a function of temperature $T$ in agreement with the prediction of the Fermi liquid model. The quasiparticles are shown to definitely behave as a 3D Fermi liquid. Various attempts to describe the system in terms of non-Fermi liquids,e.g. the RVB state, seem to be erroneous.

2 pages, 3 Postscript figures, To appear in Physica C