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Journal Articles Physical Review Letters Year : 2003

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

S. Pailhes
Yvan Sidis
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C. Ulrich
  • Function : Author
V. Hinkov
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A. Ivanov
  • Function : Author
B. Liang
  • Function : Author
C. T. Lin
  • Function : Author
C. Bernhard
  • Function : Author
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.

Dates and versions

hal-00127032 , version 1 (28-01-2007)

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S. Pailhes, Yvan Sidis, P. Bourges, C. Ulrich, V. Hinkov, et al.. Two resonant magnetic modes in an overdoped high-$\bf T_c$ superconductor. Physical Review Letters, 2003, 91, pp.237002. ⟨10.1103/PhysRevLett.91.237002⟩. ⟨hal-00127032⟩
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