Novel neutron resonance mode in dx2-y2-wave superconductors.
نویسندگان
چکیده
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).
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عنوان ژورنال:
- Physical review letters
دوره 94 14 شماره
صفحات -
تاریخ انتشار 2005