Magnetotransport in overdoped <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>La</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi>Sr</mml:mi></mml:mrow><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mi>CuO</mml:mi></mml:mrow><mml:mn>4</mml:mn></mml:msub></mml:math> : Fermi liquid approach

Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

C. G. Fatuzzo,1 Y. Sassa,2 M. Månsson,1,3,4 S. Pailhès,3,5 O. J. Lipscombe,6 S. M. Hayden,6 L. Patthey,7 M. Shi,7 M. Grioni,1 H. M. Rønnow,1 J. Mesot,1,2,3 O. Tjernberg,4 and J. Chang1,7,3 1Institute for Condensed Matter Physics, École Polytechnique Fedérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland 2Laboratory for Solid State Physics, ETH Zürich, CH-8093 Zürich, Switzerland 3Laboratory...

NMR in “underdoped ” and “overdoped ” YBa2Cu3O7−δ compounds: Fermi-liquid approach.

Heat transport in a strongly overdoped cuprate: Fermi liquid and a pure d-wave BCS superconductor.

The transport of heat and charge in the overdoped cuprate superconductor Tl(2)Ba2CuO(6+delta) was measured down to low temperature. In the normal state, obtained by applying a magnetic field greater than the upper critical field, the Wiedemann-Franz law is verified to hold perfectly. In the superconducting state, a large residual linear term is observed in the thermal conductivity, in quantitat...

On superconducting instability in non-Fermi liquid: scaling approach

The superconducting instability in a non-Fermi liquid in d > 1 is considered. For a particular form of the single particle spectral function with homogeneous scaling A(Λk,Λω) = ΛA(k, ω) it is shown that the pair susceptibility is also a scaling function of temperature with power defined by α. We find three different regimes depending on the scaling constant. The BCS result is recovered for α = ...

Functional Integral approach to quasi-particles in Fermi liquid theory

In this paper we propose a new way of organizing many-body perturbation theory in the Path-integral formulation where a set of quasi-particle wavefunctionals ψ’s are introduced and are identified with quasi-particles in Landau Fermi liquid theory. We show how Fermi liquid theory can be obtained through ψ’s in this new framework of perturbation theory, where the only assumption is adiabaticity b...