Allgemein

Stefan Käser, Hugo U. R. Strand, Nils Wentzell, Antoine Georges, Olivier Parcollet, and Philipp Hansmann We study the superconducting gap function of Sr2RuO4. By solving the linearized Eliashberg equation with a correlated pairing vertex extracted from a dynamical mean-field calculation we identi... Continue

A many-method study of the Hubbard model demonstrates how the field of computational quantum physics is evolving to be more collaborative. Continue

X. Cao, Y. Lu, P. Hansmann, M. W. Haverkort We present a tree tensor-network impurity solver suited for general multiorbital systems. The network is constructed to efficiently capture the entanglement structure and symmetry of an impurity problem. The solver works directly on the real-time/frequenc... Continue

Alexander Wietek, Riccardo Rossi, Fedor Šimkovic IV, Marcel Klett, Philipp Hansmann, Michel Ferrero, E. Miles Stoudenmire, Thomas Schäfer, Antoine Georges The physics of the triangular lattice Hubbard model exhibits a rich phenomenology, ranging from a metal-insulator transition, intriguing thermod... Continue

R. A. Ortiz, D. T. Mantadakis, F. Misják, K. Fürsich, E. Schierle, G. Christiani, G. Logvenov, U. Kaiser, B. Keimer, P. Hansmann, E. Benckiser The recent observation of superconductivity in Sr-doped infinite-layer NdNiO2 thin films has attracted a lot of attention, since this compound is electronic... Continue

Using inelastic X-ray scattering beyond the dipole limit and hard X-ray photoelectron spectroscopy we establish the dual nature of the U 5f electrons in UM2Si2 (M = Pd, Ni, Ru, Fe), regardless of their degree of delocalization. We have observed that the compounds have in common a local atomic-like s... Continue

Employing advanced methods in quantum many-body theory in 2018 we predicted chiral d-wave superconductivity in correlated ad-atom lattices on the Si(111) surface (X. Cao et al.). Now, two years later,  experimentalists in Tennessee have found superconductivity in hole doped Sn:Si(111) (X. Wu et al.)... Continue

A ~20min introduction to our research field and Bachelor/Master projects can be found here! Continue