M. Schmidt

collaborators

4 papers

cond-mat.stat-mech2026

Competing ferromagnetic and antiferromagnetic phases on the frustrated Ising honeycomb lattice

Pietro F. Dias, Fabio M. Zimmer, Nikolaos G. Fytas +1

We investigate the frustrated $J_{1}$ - $J_{2}$ - $J_{3}$ Ising model on the honeycomb lattice, featuring first- and second-neighbor ferromagnetic couplings ( $J_{1} > 0$ and $J_{2} > 0$ ) and third-n…

cond-mat.str-el2025

Spin-singlet dimer phase in a frustrated square lattice under a magnetic field

L. M. Ramos, M. Schmidt, F. M. Zimmer

We investigated the isotropic spin-1/2 Heisenberg model on an anisotropic square lattice with competing exchange interactions, motivated by the unconventional magnetic behavior obs…

cond-mat.stat-mech2025

The correlated cluster mean-field approach to the frustrated Ising model on the honeycomb lattice

Carlos H. D. Batista, M. Schmidt, F. M. Zimmer

We study the $J_{1}$ - $J_{2}$ Ising model on the honeycomb lattice, considering ferromagnetic interactions between first neighbors ( $J_{1}$ ) and antiferromagnetic interactions between sec…

cond-mat.str-el2025

Interplay of frustration and quantum fluctuations in a spin-1/2 anisotropic square lattice

L. M. Ramos, F. M. Zimmer, M. Schmidt

Motivated by theoretical and experimental studies reported by Yamaguchi et al. (Phys. Rev. B 98, 094402 (2018)), we performed a cluster mean-field analysis of an anisotropic Heisen…