Antiferromagnetic excitations and van Hove singularities in YBa2Cu3O6+x

Girsh Blumberg, Branko P. Stojković, M. V. Klein

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

We show that in quasi-two-dimensional d-wave superconductors van Hove singularities close to the Fermi surface lead to magnetic quasiparticle excitations. We calculate the temperature and doping dependence of dynamical magnetic susceptibility for YBa2Cu3O6+x and show that the proposed excitations are in agreement with inelastic-neutron-scattering experiments. In addition, the values of the gap parameter and in-plane antiferromagnetic coupling are much smaller than usually believed.

Original languageEnglish (US)
Pages (from-to)R15741-R15744
JournalPhysical Review B
Volume52
Issue number22
DOIs
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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