2002/08/29 by W. Selke, V. L. Pokrovsky, B. Büchner +3 · 1 citation
Chemistry · Materials Science · Mathematics · Physics and Astronomy · #Chemistry #Condensed matter physics #Cuprate #Instability #Ising model #Magnet #Material Dynamics and Properties #Materials science #Mathematics #Mechanics #Monte Carlo method #Physics #Quantum mechanics #Robustness (evolution) #Statistical physics #Stochastic processes and statistical mechanics #Superconductivity #Theoretical and Computational Physics #cond-mat
paper · pdf · doi:10.1140/epjb/e2002-00361-0
arxiv created 2002/08/29 · openalex publication_date 2002/11/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Motivated by recent experiments on cuprates with low-dimensional magnetic interactions, a new class of two-dimensional Ising models with short-range interactions and mobile defects is introduced and studied. The non-magnetic defects form lines, which, as temperature increases, first meander and then become unstable. Using Monte Carlo simulations and analytical low- and high-temperature considerations, the instability of the defect stripes is monitored for various microscopic and thermodynamic quantities in detail for a minimal model, assuming some of the couplings to be indefinitely strong. The robustness of the findings against weakening the interactions is discussed as well.