2004/02/29 by Jozef Strečka, Jozef Strecka, Michal Jascur +1
Materials Science · Physics and Astronomy · #Magnetism in coordination complexes #Physics of Superconductivity and Magnetism #Quantum many-body systems #cond-mat.mtrl-sci #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevb.70.014404
published as Phys. Rev. B 70 (2004) 014404 · 16 pages, 7 figures, submitted to Phys. Rev. B
arxiv created 2004/04/13 · openalex publication_date 2004/07/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Magnetic properties of a mixed spin-(1)/(2) and spin-1 Ising model on honeycomb lattice are exactly investigated within the framework of generalized star-triangle mapping transformation. The particular attention is focused on the effect of uniaxial and biaxial crystal-field anisotropies that basically influence the magnetic behavior of the spin-1 atoms. Our results for the basic thermodynamic quantities, as well as the dynamical time-dependent autocorrelation function indicate the spin tunneling between the \ensuremath|+1⟩ and \ensuremath|\ensuremath-1⟩ states in the magnetically ordered phase.