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Magnetic Collective Mode Dispersion in High Temperature Superconductors

M. R. Norman
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Abstract

Recent neutron scattering experiments in the superconducting state of YBCO have been interpreted in terms of a magnetic collective mode whose dispersion relative to the commensurate wavevector has a curvature opposite in sign to a conventional magnon dispersion. The purpose of this article is to demonstrate that simple linear response calculations are in support of a collective mode interpretation, and to explain why the dispersion has the curvature it does.

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M. R. Norman. 2000-10-19. Magnetic Collective Mode Dispersion in High Temperature Superconductors. https://doi.org/10.1103/physrevb.63.092509

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