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Fluctuations and Phase Separation in a Quasi-One-Dimensional System
Physical Review Letters
Phase transitions in a quasi-one-dimensional surface system on a metal substrate are investigated as a function of temperature. Upon cooling the system shows a loss of long-range order, fluctuations, and a transition into an inhomogeneous ground state due to competition of local adsorbate-adsorbate interactions with an incommensurate charge density wave. This agrees with a general phase diagram for correlated systems and high-temperature superconductors. The model surface system allows directdoi:10.1103/physrevlett.98.186101 pmid:17501588 fatcat:2r7pexfombbvddmix7ldz2yqsu