From the 2 of 9 linked papers with an AI index.
9 papers
Thermal pseudo-transitions in a frustrated spin-pseudospin sawtooth chain
Onofre Rojas, Jozef StreÄka
We present an exact analysis of a spin--pseudospin X sawtooth chain that incorporates three distinct valence states of copper ions and serves as a minimal model for one-dimensional…
Still life in a classic Blume-Capel model: pseudo-transitions in a spin-1 diamond chain
Elham Shahhosseini Shahrabadi, Majid Moradi, Jozef Strecka
The authors exactly solve a spin‑1 Blume‑Capel model on a diamond chain in a magnetic field, showing that tiny energy gaps between a nondegenerate ground state and many low‑lying e…
Thermal phase transitions in a mixed-spin Ising model on the Lieb lattice: Exact results beyond zero magnetic field
Jozef Strecka, Katarina Karlova
The paper provides an exact solution for a mixed spin‑1/2 and spin‑1 Ising model on a Lieb lattice with anisotropy and magnetic field, revealing ferrimagnetic, ferromagnetic, and d…
Katsura-Nagaosa-Balatsky magnetoelectricity in molecular magnets: Bipartite entanglement transfer by means of rotating electric field
Zhirayr Adamyan, Ani Chobanyan, Vadim Ohanyan +4
We investigate quantum entanglement in a spin-1/2 Heisenberg trimer with spin-induced electric polarization described by the Katsura-Nagaosa-Balatsky (KNB) mechanism in the presenc…
Approaching Kasteleyn transition in frustrated quantum Heisenberg antiferromagnets
Katarina Karlova, Afonso Rufino, Taras Verkholyak +5
We show that the Kasteleyn transition, the abrupt proliferation of infinite strings of defects in classical dimer and related models, can also be relevant for frustrated 2d quantum…
Fingerprints of cluster-based Haldane and bound-magnon states in a spin-1 Heisenberg diamond chain
Azam Zoshki, Hamid Arian Zad, Katarina Karlova +1
We investigate magnetic and thermodynamic properties of a spin-1 Heisenberg diamond chain in a magnetic field using a combination of analytical and numerical methods including the…