Magnetic Collective Mode Dispersion in High Temperature Superconductors

Details Magnetic Collective Mode Dispersion in High Temperature Superconductors Magnetic Collective Mode Dispersion in High Temperature Superconductors

2000-10-19

arxiv.org/abs/cond-mat/0010298v1

Phys. Rev. B 63, 092509 (2001)

Physics

Condensed Matter

Superconductivity

3 pages, revtex, 4 encapsulated postscript figures

Scientific paper

10.1103/PhysRevB.63.092509

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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