48 citations · 155 across the 11 of their papers we have counts for
11 papers
Charge fluctuations and topological phases in Kitaev-Heisenberg ladders
M. G. Sousa, O. Ávalos-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…
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…
Superconductivity and geometric superfluid weight of a tunable flat band system
M. A. Mojarro, Sergio E. Ulloa
We study superconductivity and superfluid weight of the two-dimensional - lattice with on-site asymmetries, hosting an isolated quasi-flat band with tunable bandw…
Majorana edge states in s-wave kagome superconductors with Rashba interaction
M. A. Mojarro, Sergio E. Ulloa
We study kagome lattices with on-site and extended spin-singlet s-wave superconducting pairing and show that the inclusion of Rashba spin-orbit (RSO) interaction allows time-revers…
Tuning electronic pairing by uniaxial strain in kagome lattices
M. A. Mojarro, Sergio E. Ulloa
We study the interplay of attractive electron interactions and topological states in strained kagome lattices with spin-orbit coupling via a Hubbard Hamiltonian in the mean-field a…
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…
Competing long-range interactions and spin vector chirality in spin-chains
E. Vernek, O. Ávalos-Ovando, S. E. Ulloa
Studies of competing orders in 1D magnetic chains have attracted considerable attention in recent years, as the presence of long-range Heisenberg interactions is found to allow int…
Lateral heterostructures and one-dimensional interfaces in 2D transition metal dichalcogenides
Oscar Ávalos-Ovando, Diego Mastrogiuseppe, Sergio E. Ulloa
The growth and exfoliation of two-dimensional (2D) materials have led to the creation of edges and novel interfacial states at the juncture between crystals with different composit…
Tunable spin-polarized edge currents in proximitized transition metal dichalcogenides
Natalia Cortés, O. Ávalos-Ovando, L. Rosales +2
We explore proximity-induced ferromagnetism on transition metal dichalcogenide (TMD), focusing on molybdenum ditelluride (MoTe) ribbons with zigzag edges, deposited on ferrom…
Long range of indirect exchange interaction on the edges of MoS flakes
Oscar Ávalos-Ovando, Diego Mastrogiuseppe, Sergio E. Ulloa
We study the Ruderman-Kittel-Kasuya-Yosida interaction between two magnetic impurities connected to the edges of zigzag-terminated MoS flakes. When the impurities lie on the…
Suppression of Kondo screening by the Dicke effect in multiple quantum dots
E. Vernek, P. A. Orellana, S. E. Ulloa
The interplay between the coupling of an interacting quantum dot to a conduction band and its connection to localized levels has been studied in a triple quantum dot arrangement. T…