40 citations · 354 across the 37 of their papers we have counts for
37 papers
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 -- Ising model on the honeycomb lattice, featuring first- and second-neighbor ferromagnetic couplings ( and ) and third-n…
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…
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 - Ising model on the honeycomb lattice, considering ferromagnetic interactions between first neighbors () and antiferromagnetic interactions between sec…
Decorated Clusters and Geometrical Frustration in Cluster Spin Glass: A Random Graph Approach
S. G. Magalhaes, F. M. Zimmer, R. Erichsen
We develop a theory to investigate how geometrically frustrated clusters that become decorated affect the Cluster Spin Glass phase. The cluster structure is assumed to be a tetrahe…
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…
Enhancement of the Magnetocaloric Effect in Geometrically Frustrated Cluster Spin Glass Systems
F. M. Zimmer, R. Mourao, M. Schmidt +2
In this work, we theoretically demonstrate that a strong enhancement of the Magnetocaloric Effect is achieved in geometrically frustrated cluster spin-glass systems just above the…