|dc.contributor.author||Kusmartsev, Feodor V||-|
|dc.contributor.author||Laad, Mukul S||-|
|dc.contributor.author||Kugel, Kliment I||-|
|dc.description.abstract||We analyze the formation of stripe-like and droplet-like superstructures in a plane with classical magnetic moments forming a square lattice, which is relevant, in particular, to a two-dimensional array of π-rings. Each magnetic and orbital moment associated with a single π-ring is oriented perpendicular to the plane. We describe such arrays in the framework a two-dimensional Ising model with both nearest-neighbor and next-nearest-neighbor (diagonal) interactions. Such competing interactions introducing a strong frustration provide a plausible description for a dipole-dipole type of interaction. The model was studied with the use of several methods including exact diagonalization for small clusters, transfer matrix technique, as well as the Monte Carlo simulations for large lattices. The complete phase diagram resulting from this study includes, together with the conventional antiferromagnetic Ising and stripe phases, an additional glassy phase characterized by the formation of large-scale superstructures.||en_UK|
|dc.relation||O'Hare A, Kusmartsev FV, Laad MS & Kugel KI (2006) Evidence of superstructures at low temperatures in frustrated spin systems, Physica C: Superconductivity and its Applications, 437-38, pp. 230-233.||-|
|dc.rights||The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.||-|
|dc.subject||Monte Carlo simulations||en_UK|
|dc.title||Evidence of superstructures at low temperatures in frustrated spin systems||en_UK|
|dc.rights.embargoreason||The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.||-|
|dc.citation.jtitle||Physica C: Superconductivity and its Applications||-|
|dc.type.status||Publisher version (final published refereed version)||-|
|Appears in Collections:||Computing Science and Mathematics Journal Articles|
|Physica C 2006.pdf||311.85 kB||Adobe PDF||Under Embargo until 31/12/2999 Request a copy|
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