Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 17: Poster Session: Correlated Electrons 1

TT 17.16: Poster

Montag, 1. April 2019, 15:00–18:30, Poster D

Exact Diagonalization study of large Hubbard clusters — •Mikhail Danilov¹, Sergei Iskakov², Malte Harland¹, Sergei Brener¹, Andrei Bagrov³, Alexander Lichtenstein¹, and Mikhail Katsnelson³ — ¹I. Institut für Theoretische Physik Jungiusstrasse 9, 20355 Hamburg, Germany — ²Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA — ³Institute for Molecules and Materials, Radboud University, 6525AJ Nijmegen, 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.