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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Thermodynamics of the hyperkagome-latticeS=12Heisenberg ferromagnet
Maksym Parymuda1, Taras Krokhmalskii1, Oleg Derzhko1,2
1Institute for Condensed Matter Physics, National Academy of Sciences of Ukraine, Svientsitskii Street 1, 79011 L'viv, Ukraine.
Abstract:
The hyperkagome-latticeS=1/2Heisenberg ferromagnet is studied by means of the linear spin-wave theory, the double-time temperature Green's function method, high-temperature expansions series analysis, and quantum Monte Carlo simulations to examine the effect of lattice geometry on the finite-temperature properties. In particular, we have found that the Curie temperatureTcfor the hyperkagome-lattice (frustrated lattice) ferromagnet is about0.33|J|that is smaller thanTcfor the diamond-lattice (another three-dimensional lattice with the same coordination number 4 but bipartite one) ferromagnet by about 25%.
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