A. A. Aligia

activity

19932024

most citedQuantum-Mechanical Position Operator and Localization in Extended Systems

101 citations · 926 across the 38 of their papers we have counts for

collaborators

Showing 1996Show all

2 papers · 1 filter

cond-mat1996★ 13 cited

Phase separation and valence instabilities in cuprate superconductors. Effective one-band model approach

M. E. Simón, A. A. Aligia

We study the Cu-O valence instability (VI) and the related phase separation (PS) driven by Cu-O nearest-neighbor repulsion $U_{p d}$ , using an effective extended one-band Hubbard mo…

cond-mat1996★ 43 cited

Excitons in insulating cuprates

M. E. Simón, A. A. Aligia, C. D. Batista +2

We study the electronic excitations near the charge-transfer gap in insulating CuO $_{2}$ planes, starting from a six-band model which includes and $d_{x y}$ orbitals and Cu-O…