Heavy fermions and superconductivity in doped cuprates

Sabine Tornow*, Vilen Zevin, Gertrud Zwicknagl

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We present a Fermi liquid description for the low-energy excitations in rare earth cuprates Nd2-xCexCuO4. The strongly renormalized heavy quasiparticles which appear in the doped samples originate from the coherent decoupling of rare earth spins and correlated conduction electrons. The correlations among the conduction electrons are simulated by assuming a spin density wave ground state. We discuss results for the thermodynamic properties in the insulating, normal metallic and superconducting phases which are in fair agreement with experimental data. In addition, the model predicts interesting behaviour for the superconducting state of samples with low transition temperature Tc which may help to assess the validity of the underlying assumptions.

Original languageEnglish
Pages (from-to)501-525
Number of pages25
JournalAnnalen der Physik
Volume508
Issue number6
DOIs
StatePublished - 1996

Keywords

  • Heavy fermions
  • High-T Superconductors
  • Strongly correlated electron systems

Fingerprint

Dive into the research topics of 'Heavy fermions and superconductivity in doped cuprates'. Together they form a unique fingerprint.

Cite this