ISSN:
1434-6036
Keywords:
PACS. 05.50.+q Lattice theory and statistics (Ising, Potts, etc.) – 74.72.Dn La-based cuprates – 75.10.Hk Classical spin models
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epjb/e2002-00361-0
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