6 papers
Electronic Green's function across the pseudogap to stripe transition in the -- model
Martin Ulaga, Aritra Sinha, Alexander Wietek
Superconducting domes in strongly correlated electronic systems are often accompanied by charge density waves and peculiar features in the electronic structure. The appearance of a…
Melting upon cooling in a quantum magnet
K. JaksetiÄ, T. Arh, M. Pregelj +19
Heating enhances thermal fluctuations and typically leads to melting of solids, but in exceptional cases, heating can also cause liquids to solidify. The paradigm of this counterin…
Evolution of superconductivity from charge clusters to stripes in the -- model
Aritra Sinha, Hannes Karlsson, Martin Ulaga +1
Competition and coexistence of charge orders and superconductivity are hallmarks in many strongly correlated electron systems. Here, we unravel the precise role of charge fluctuati…
XDiag: Exact Diagonalization for Quantum Many-Body Systems
Alexander Wietek, Luke Staszewski, Martin Ulaga +6
Exact diagonalization (ED) is a cornerstone technique in quantum many-body physics, enabling precise solutions to the Schrödinger equation for interacting quantum systems. Despite…
The anisotropic Heisenberg model close to the Ising limit: triangular lattice vs. effective models
Martin Ulaga, Jure Kokalj, Takami Tohyama +2
Stimulated by recent experiments on materials representing the realization of the anisotropic Heisenberg spin- model on the triangular lattice, we explore further properties o…
Easy-axis Heisenberg model on the triangular lattice: from supersolid to gapped solid
Martin Ulaga, Jure Kokalj, Takami Tohyama +1
We investigate the easy-axis Heisenberg model on the triangular lattice by numerically studying excitations and the dynamical spin structure factor . Results…