522 citations · 2.8k across the 140 of their papers we have counts for
141 papers
Phase transitions through excited-state level crossings and topological indicators: the case of the XXZ chain with staggered Ising interaction
B. F. Márquez, K. Hallberg, A. A. Aligia
We combine two ways of determining the phase diagram of the spin- XXZ chain with a staggered Ising interaction and uniform transverse exchange, based on exact diagonalization.…
Topological flat bands emerging at the inversion of stacking order in rhombohedral graphite
R. Weht, A. A. Aligia, M. Nunez-Regueiro
Motivated by the indications of high-Tc superconductivity in natural graphite enriched in the rhombohedral phase, we study the band structure of several stacking configurations tha…
Exact analytical edge states in the extended Su-Schrieffer-Heeger model
P. A. Grizzi, A. A. Aligia, P. Roura-Bas
We investigate the topology of the different phases of the extended Su-Schrieffer-Heeger (eSSH) model, which includes hopping processes between translationally inequivalent atoms b…
Effect of spin-orbit coupling on spin and orbital ordering in SrCrO,
Cristian Fanjul, A. A. Aligia
We incorporate spin-orbit coupling (SOC) into effective Kugel-Khomskii models for the and members of the Ruddlesden-Popper series SrCrO. These mode…
Probing Boundary Spins in the Su-Schrieffer-Heeger-Hubbard model
Armando A. Aligia, Alejandro M. Lobos, Lucila Peralta Gavensky +1
Studying boundary excitations provides a powerful approach to probe correlations in topological phases. We propose that localized spins near the ends of a Su-Schrieffer-Heeger-Hubb…
Effect of interatomic repulsion and quasi-degenerate states on a Kitaev-transmon qubit based on double quantum dots
Clara Palacios, Armando A. Aligia
We investigate the effect of interatomic Coulomb repulsion and particular states disregarded previously on the Kitaev-transmon system proposed by Pino \textit{et al.} \cite{pin…