Novel neutron resonance mode in dx2-y2-wave superconductors |
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| Authors: | Eremin I Morr D K Chubukov A V Bennemann K H Norman M R |
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| Institution: | Institut für Theoretische Physik, Freie Universit?t Berlin, D-14195, Berlin, Germany. |
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| Abstract: | 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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