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TT: Fachverband Tiefe Temperaturen
TT 16: Poster Session Superconductivity, Cryogenic Particle Detectors, Cryotechnique
TT 16.19: Poster
Montag, 16. März 2020, 15:00–19:00, P2/EG
Exact Diagonalization study of large Hubbard clusters — •Michael Danilov1, Sergei Iskakov2, Andrei Bagrov3, Alexander Lichtenstein1, and Mikhail Katsnelson3 — 1I. Institut für Theoretische Physik, Jungiusstr. 9, 20355 Hamburg, Germany — 2Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA — 3Institute for Molecules and Materials, Radboud University, 6525AJ Nijmengen, The Netherlands
Using efficient exact diagonalization scheme, we study electronic structure of 4x4 doped Hubbard cluster with realistic hopping parameters including next nearest neighbour hopping t′ = −0.3t, which is optimal for superconducting cuprates.
To find possible candidates for superconducting regime we calculate the spectral function and network entanglement measures for different doping and Coulomb interaction.