Commensurability Transition and Stripe Phases in the Ginzburg-Landau Theory

Details Commensurability Transition and Stripe Phases in the Ginzburg-Landau Theory Commensurability Transition and Stripe Phases in the Ginzburg-Landau Theory

2003-10-15

arxiv.org/abs/cond-mat/0310364v1

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 2 figures (Pacs Numbers: 74.72.-h, 75.50.Ee, 71.45.Lr)

Scientific paper

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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