We develop a sine-Gordon model of layered systems of two-dimensional modulated surfaces and one-dimensional stripes and demonstrate that these systems can undergo a Kosterlitz-Thouless transition in which the modulations unlock as a result of thermal or quantum fluctuations, respectively. The unlocked phase is interpreted as an anisotropic crystal in which soliton-antisoliton pairs proliferate. The properties of such a state for modulated stripes in quantum Hall systems and its possible relevance to recent anomalies in transport data are discussed.
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H. A. Fertig (1999) studied this question.
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