Novel neutron resonance mode in dx2-y2-wave superconductors

We show that a new resonant magnetic excitation at incommensurate momenta, observed recently by inelastic neutron scattering experiments on YBa2Cu3O6.85 and YBa2Cu3O6.6, is a spin exciton. Its location in the Brillouin zone and its frequency are determined by the momentum dependence of the particle-...

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Bibliographic Details
Published inPhysical review letters Vol. 94; no. 14; p. 147001
Main Authors Eremin, I, Morr, D K, Chubukov, A V, Bennemann, K H, Norman, M R
Format Journal Article
LanguageEnglish
Published United States 15.04.2005
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Summary:We show that a new resonant magnetic excitation at incommensurate momenta, observed recently by inelastic neutron scattering experiments on YBa2Cu3O6.85 and YBa2Cu3O6.6, is a spin exciton. Its location in the Brillouin zone and its frequency are determined by the momentum dependence of the particle-hole continuum. We identify several features that distinguish this novel mode from the previous resonance mode observed near Q=(pi,pi).
ISSN:0031-9007