Spin excitations in fluctuating stripe phases of doped cuprate superconductors

Details Spin excitations in fluctuating stripe phases of doped cuprate superconductors Spin excitations in fluctuating stripe phases of doped cuprate superconductors

2005-10-18

arxiv.org/abs/cond-mat/0510448v4

Phys. Rev. Lett. 97, 097001 (2006)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figs, minor changes, final version as published

Scientific paper

10.1103/PhysRevLett.97.097001

Using a phenomenological lattice model of coupled spin and charge modes, we determine the spin susceptibility in the presence of fluctuating stripe charge order. We assume the charge fluctuations to be slow compared to those of the spins, and combine Monte Carlo simulations for the charge order parameter with exact diagonalization of the spin sector. Our calculations unify the spin dynamics of both static and fluctuating stripe phases and support the notion of a universal spin excitation spectrum in doped cuprate superconductors.

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