1. Milan Pantić, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Departman za fiziku, Serbia
We investigate the excitation spectrum of the antiferromagnetic Heisenberg XXZ triangular lattice model using the method of two-time spin Green's functions. The single-magnon spectrum was calculated in the approximation of random phases, for all values of the anisotropy parameter in the range 0 < Jz < J1. We tested our model on the concrete compound Ba3CoSb2O9. The obtained theoretical results show a good agreement with the experimental measurements for the mentioned compound. Also, the excitation continuum that is generally present in two-dimensional frustrated spin systems such as this compound is clearly manifested.
Ključne reči :
Tematska oblast:
SIMPOZIJUM A - Nauka materije, kondenzovane materije i fizika čvrstog stanja
Datum:
05.06.2024.
Contemporary Materials 2024 - Savremeni Materijali
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