Local moment fluctuations in an optimally-doped high Tc superconductor

D. Reznik; J. -P. Ismer; I. Eremin; L. Pintschovius; M. Arai; Y. Endoh; T. Masui; S. Tajima

Local moment fluctuations in an optimally-doped high Tc superconductor

Superconductivity 2008-09-06 v2

Authors: D. Reznik , J. -P. Ismer , I. Eremin , L. Pintschovius , M. Arai , Y. Endoh , T. Masui , S. Tajima

Abstract

We present results of neutron scattering experiments on YBa2Cu3O6.95 (Tc=93K). Our results indicate that magnetic collective modes due to correlated local moments are present both above and below Tc in optimally doped YBCO. The magnon-like modes are robust and not overdamped by itinerant particle-hole excitations, which may point at a substantial static or slowly fluctuating charge inhomogeneity. We compare the experimental results to predictions of the Fermi liquid (FL) theory in the Random Phase Approximation (RPA).

Keywords

neutron scattering high-Tc superconductor local moments magnetic collective modes Fermi liquid theory random phase approximation charge inhomogeneity

Cite

@article{arxiv.cond-mat/0610755,
  title  = {Local moment fluctuations in an optimally-doped high Tc superconductor},
  author = {D. Reznik and J. -P. Ismer and I. Eremin and L. Pintschovius and M. Arai and Y. Endoh and T. Masui and S. Tajima},
  journal= {arXiv preprint arXiv:cond-mat/0610755},
  year   = {2008}
}

Comments

This is a new version, which is substantially different from the previous one. Physical Review B, in print

Local moment fluctuations in an optimally-doped high Tc superconductor

Abstract

Keywords

Cite

Comments

Related papers