Phenomenological lattice model for dynamic spin and charge fluctuations in the cuprates

Details Phenomenological lattice model for dynamic spin and charge fluctuations in the cuprates Phenomenological lattice model for dynamic spin and charge fluctuations in the cuprates

2004-08-21

arxiv.org/abs/cond-mat/0408461v1

Journal of the Physics and Chemistry of Solids, 67, 11 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures; Proceedings of SNS 2004, Sitges, Spain

Scientific paper

10.1016/j.jpcs.2005.10.136

Motivated by recent neutron scattering experiments on the cuprate superconductors, we present a phenomenological framework describing the dynamics of collective spin excitations coupled to charge/bond order fluctuations. Our quantum lattice model contains two order parameter fields, and can capture spin excitations both in broken-symmetry states with static lattice modulations, as well as in homogeneous states where the charge/bond order is fluctuating. We present results for different types of static charge/bond order, namely site- and bond-centered stripes, and plaquette modulation.

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