Two resonant magnetic modes in an overdoped high-$\bf T_c$ superconductor

S. Pailhes; Y. Sidis; P. Bourges; C. Ulrich; V. Hinkov; L. P. Regnault; A. Ivanov; B. Liang; C. T. Lin; C. Bernhard; B. Keimer

doi:10.1103/PhysRevLett.91.237002

Two resonant magnetic modes in an overdoped high-$\bf T_c$ superconductor

Superconductivity 2007-05-23 v1 Strongly Correlated Electrons

Authors: S. Pailhes , Y. Sidis , P. Bourges , C. Ulrich , V. Hinkov , L. P. Regnault , A. Ivanov , B. Liang , C. T. Lin , C. Bernhard , B. Keimer

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Abstract

A detailed inelastic neutron scattering study of the overdoped high temperature copper oxide superconductor ${Y_{0.9}Ca_{0.1}Ba_{2}Cu_3O_{7}}$ reveals two distinct magnetic resonant modes in the superconducting state. The modes differ in their symmetry with respect to exchange between adjacent copper oxide layers. Counterparts of the mode with odd symmetry, but not the one with even symmetry, had been observed before at lower doping levels. The observation of the even mode resolves a long-standing puzzle, and the spectral weight ratio of both modes yields an estimate of the onset of particle-hole spin-flip excitations.

Keywords

high Tc superconductor neutron scattering magnetic resonance YBCO particle-hole excitation

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@article{arxiv.cond-mat/0308394,
  title  = {Two resonant magnetic modes in an overdoped high-$\bf T_c$ superconductor},
  author = {S. Pailhes and Y. Sidis and P. Bourges and C. Ulrich and V. Hinkov and L. P. Regnault and A. Ivanov and B. Liang and C. T. Lin and C. Bernhard and B. Keimer},
  journal= {arXiv preprint arXiv:cond-mat/0308394},
  year   = {2007}
}

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Two resonant magnetic modes in an overdoped high-$\bf T_c$ superconductor

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