196 citations · 1k across the 29 of their papers we have counts for
4 papers · 1 filter
Parquet approximation for molecules: spectrum and optical conductivity of the Pariser-Parr-Pople model
Petra Pudleiner, Patrik Thunström, Angelo Valli +3
We study a simple model system for the conjugated -bonds in benzene, the Pariser-Parr-Pople (PPP) model, within the parquet approximation (PA), exemplifying the prospects of the…
Emergent symmetry in fully-relaxed magic-angle twisted bilayer graphene
M. Angeli, D. Mandelli, A. Valli +4
We present a tight-binding calculation of a twisted bilayer graphene at magic angle , allowing for full, in- and out-of-plane, relaxation of the atomic positions.…
Interplay between destructive quantum interference and symmetry-breaking phenomena in graphene quantum junctions
Angelo Valli, Adriano Amaricci, Valentina Brosco +1
We study the role of electronic spin and valley symmetry in the quantum interference (QI) patterns of the transmission function in graphene quantum junctions. In particular, we lin…
Coexistence of metallic edge states and anti-ferromagnetic ordering in correlated topological insulators
A. Amaricci, A. Valli, G. Sangiovanni +2
We investigate the emergence of anti-ferromagnetic ordering and its effect on the helical edge states in a quantum spin Hall insulator, in the presence of strong Coulomb interactio…