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cond-mat.str-el2025
Charge fluctuations and topological phases in Kitaev-Heisenberg ladders
M. G. Sousa, O. Ãvalos-Ovando, E. Vernek +1
We investigate the stability of topological phases in doped Kitaev-Heisenberg ladders by studying the competition with itinerant electrons and the associated charge fluctuations in…
cond-mat.str-el2025
Optimal array geometries for kinetic magnetism and Nagaoka polarons
N. Hernandez-Cepeda, Sergio E. Ulloa
Quantum dot (QD) platforms have enabled the direct observation of Nagaoka ferromagnetism (NFM) in small arrays and non-infinite interaction strength. However, optimizing the cluste…
cond-mat.str-el2024
Magnetic response and antiferromagnetic correlations in strained kagome ribbons
R. F. P. Costa, E. Vernek, S. E. Ulloa
We study the physics of the strong-coupling Hubbard model in a kagome lattice ribbon under mechanical tension and half-filling. It is known that in the absence of strain, the latti…