Resonant magnetic excitations at high energy in superconducting YBa₂Cu₃O₆.₈₅
Pailhes, S. · Sidis, Y. · Bourges, P. · Hinkov, V. · Ivanov, A. · Ulrich, C. · Regnault, L. P. · Keimer, B.
Original · EN
A detailed inelastic neutron scattering study of the high temperature superconductor YBa₂Cu₃O₆.₈₅ provides evidence of new resonant magnetic features, in addition to the well known resonant mode at 41 meV: (i) a commensurate magnetic resonance peak at 53 meV with an even symmetry under exchange of two adjacent CuO₂ layers; and (ii) high energy incommensurate resonant spin excitations whose spectral weight is around 54 meV. The locus and the spectral weight of these modes can be understood by considering the momentum shape of the electron-hole spin-flip continuum of d-wave superconductors. This provides new insight into the interplay between collective spin excitations and the continuum of electron-hole excitations.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.