7 citations · 7 across the 2 of their papers we have counts for
3 papers
cond-mat.str-el2026
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.…
cond-mat.str-el2025
Tunneling spectroscopy of the spinon-Kondo effect in one-dimensional Mott insulators
Rodrigo G. Pereira, Bruno F. Marquez, Karen Hallberg +2
We study the tunneling density of states (TDOS) in one-dimensional Mott insulators at energies below the charge gap. By employing nonlinear Luttinger liquid theory and density-matr…
cond-mat.str-el2024★ 7 cited
Phase diagram and topology of the XXZ chain with alternating bonds and staggered magnetic field
B. F. Márquez, N. Aucar Boidi, K. Hallberg +1
The XXZ spin-half chain has Heisenberg exchange interactions () in the () direction. The model has a transition from the spin-fluid phase for $-J_\perp < J_…