Author(s):
1. Milan Pantić, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Departman za fiziku, Serbia

Abstract:
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.

Key words:
Excitation spectar, spin anisotropy, anisotropic antiferromagnetic Heisenberg model

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
05.06.2024.

Conference:
Contemporary Materials 2024 - Savremeni Materijali

Applied paper from author