Abstract
We investigate quantum fluctuations of striped and honeycomb domain walls in 2D incommensurate states at T=0 near the commensurate-incommensurate transition point. It is revealed that stripes melt due to quantum fluctuations and become a soliton liquid for a large-wall-spacing region. Zero-point energies of striped and honeycomb phases are calculated using an elastic theory. As a consequence of these results, phase diagrams for soliton-lattice and liquid phases are discussed for various domain-wall masses.
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Momoi, T. Quantum Melting of Domain Walls in 2D Incommensurate Phases. Journal of Low Temperature Physics 126, 731–736 (2002). https://doi.org/10.1023/A:1013720729715
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DOI: https://doi.org/10.1023/A:1013720729715