Abstract
Charge kinks are considered as excitations in a quarter-filled charge-ordered ladder. The strength of the coupling of the kinks to the three-dimensional lattice depends on their energy. The integrated intensity of Raman scattering by the kink-antikink pairs is proportional to ${\ensuremath{\varphi}}^{5}$ or ${\ensuremath{\varphi}}^{4},$ where $\ensuremath{\varphi}$ is the order parameter. The exponent is determined by the system parameters and the strength of the electron-phonon coupling.
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