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

Matthias Vojta; Subir Sachdev

doi:10.1016/j.jpcs.2005.10.136

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

Matthias Vojta·Subir Sachdev

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Abstract

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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Matthias Vojta, Subir Sachdev. 2004-08-21. Phenomenological lattice model for dynamic spin and charge fluctuations in the cuprates. https://doi.org/10.1016/j.jpcs.2005.10.136

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