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Commensurability Transition and Stripe Phases in the Ginzburg-Landau Theory

B. Uchoa·G. G. Cabrera
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Abstract

We phenomenologically describe the thermodynamics of charge and spin density waves in doped high-$T_{c}$ oxides. We have explicitly calculated stable non-homogeneous solutions in the incompressible spin driven stripe phase, where stripes are static soliton-like charge density waves (CDW), and in the vicinity of their critical point, where CDW's become harmonic. Our phase diagram points to a commensurability transition separating the low (LI) and high (HI) incommensurable phases. Besides, we demonstrate by rigorous group symmetry arguments that the stripe criticality is compatible with a second order phase transition.

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B. Uchoa, G. G. Cabrera. 2003-10-15. Commensurability Transition and Stripe Phases in the Ginzburg-Landau Theory. https://arxiv.org/abs/cond-mat/0310364

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