Localized-Magnon Chains and Interchain Interactions
O. Krupnitska a, J. Richter b and O. Derzhkoa,c,b,d
aInstitute for Condensed Matter Physics, National Academy of Sciences of Ukraine, Svientsitskii Str. 1, 79011 L'viv, Ukraine
bInstitut für Theoretische Physik, Otto-von-Guericke-Universität Magdeburg, P.O. Box 4120, 39016 Magdeburg, Germany
cDepartment for Theoretical Physics, Ivan Franko National University of L'viv, Drahomanov Str. 12, 79005 L'viv, Ukraine
dAbdus Salam International Centre for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy
Received: May 3, 2016
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We consider the spin-1/2 antiferromagnetic XXZ Heisenberg model on a two-dimensional network of weakly coupled frustrated diamond chains, i.e., a spin model related to the celebrated azurite compound. Using the strong-coupling approach we construct an effective Hamiltonian which yields the low-temperature high-field properties of the spin system. We examine effects of interchain interactions on localized-magnon physics.

DOI: 10.12693/APhysPolA.132.1234
topics: localized magnons, interchain interaction, azurite