Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session A70: Ruthenates and 4D Systems
8:00 AM–10:36 AM,
Monday, March 14, 2022
Room: Hyatt Regency Hotel -Jackson Park B
Sponsoring Units: DMP DCMP
Chair: Jennifer Fowlie, Stanford University
Abstract: A70.00010 : Novel subbands inelectronic spectral densities of correlated systems
10:12 AM–10:24 AM
Nair S Aucar Boidi
Yuriel Núñez Fernández
(Rutgers University, New Brunswick)
We calculate and resolve with high precision the electronic spectral densities at zero temperature of one of the key models for multi-orbital strongly correlated electron materials, the Kanamori-Hubbard Hamiltonian (KH), by means of the Dynamical Mean Field Theory which uses the Density Matrix Renormalization Group (DMRG) as the (effective) impurity solver. Due to the precision of this technique, we are able to observe the existence of unforeseen subbands and structure in the local density of states for finite values of the inter-orbital coupling V, which we characterize by calculating specific response functions.
I will also show very recent results on the electronic densities of states of a one-dimensional version of the KH model calculated with DMRG, for which we also find in-gap subbands for finite values of V.
We expect that the results presented here together with the possibility of calculating more precise spectral functions for models of correlated materials will stimulate a closer study of the details of experimental results and, hence, will contribute to unveil the complex and elusive microscopic behavior of strongly correlated materials.
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