342 citations · 1.2k across the 33 of their papers we have counts for
33 papers
Determination of superexchange interactions for the CuO chains in LiCuO
N. Aucar Boidi, Christian Helman, Y. Núñez-Fernández +2
Starting from \textit{ab-initio} calculations, we derive a five-band Hubbard model to describe the CuO chains of LiCuO. This model is further simplified to a low-energy…
In-gap band in the one-dimensional two-orbital Kanamori-Hubbard model with inter-orbital Coulomb interaction
N. Aucar Boidi, H. Fernández García, Y. Núñez-Fernández +1
We study the electronic spectral properties at zero temperature of the one-dimensional (1D) version of the degenerate two-orbital Kanamori Hubbard model (KHM), one of the well esta…
Novel subbands in the doped two-orbital Kanamori-Hubbard model
K. Hallberg, Y. Núñez-Fernández
We calculate and resolve with unprecedented detail the local density of states (DOS) and momentum-dependent spectral functions at zero temperature of one of the key models for stro…
Renormalized dispersing multiplets in the spectrum of nearly Mott localized systems
Yashar Komijani, Karen Hallberg, Gabriel Kotliar
The spectrum of the strongly correlated systems usually shows resonant peaks at finite energy, with examples in the 115 Ce family which are reproduced by the dynamical mean-field t…
Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
Y. Núñez Fernández, K. Hallberg
We implement an efficient numerical method to calculate response functions of complex impurities based on the Density Matrix Renormalization Group (DMRG) and use it as the impurity…
Emergent low-energy bound states in the two-orbital Hubbard model
Y. Nunez-Fernandez, G. Kotliar, K. Hallberg
A repulsive Coulomb interaction between electrons in different orbitals in correlated materials can give rise to bound quasiparticle states. We study the non-hybridized two-orbital…