Speaker
Mário Malcolms de Oliveira
(MPI-FKF)
Description
We investigate the role of non-local electronic correlations at finite temperatures in the half-filled anisotropic triangular lattice Hubbard model using the dynamical vertex approximation (DΓA), a diagrammatic extension [1] of the dynamical mean-field theory (DMFT). We analyze the impact of (quantum) phase transitions on finite temperature properties at the one- and two-particle level. We also discuss the implications of the absence of magnetic ordering at finite temperatures due to the fulfilment of the Mermin-Wagner theorem.
[1] G. Rohringer, H. Hafermann, A. Toschi, A. A. Katanin, A. E. Antipov, M. I. Katsnelson, A. I. Lichtenstein, A. N. Rubtsov, and K. Held, Rev. Mod. Phys. 90, 025003 (2018).
| Data protection policy | I agree. |
|---|
Primary authors
Mário Malcolms de Oliveira
(MPI-FKF)
Dr
Henri Menke
(MPI-FKF)
Julian Stobbe
(University of Hamburg)
Marcel Klett
(Max Planck Institute for Solid State Research)
Georg Rohringer
(GNOI)
Thomas Schäfer
(MPI-FKF)
