9 citations · 26 across the 5 of their papers we have counts for
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Itinerant magnetism in the triangular lattice Hubbard model at half-doping: Application to twisted transition-metal dichalcogenides
Yuchi He, Roman Rausch, Matthias Peschke +4
We use unrestricted Hartree-Fock, density matrix renormalization group, and variational projected entangled pair state calculations to investigate the ground state phase diagram of…
Competing States in the Two-Dimensional Frustrated Kondo-Necklace Model
Matthias Peschke, Boris Ponsioen, Philippe Corboz
The interplay between Kondo screening, indirect magnetic interaction and geometrical frustration is studied in the two-dimensional Kondo-necklace model on the triangular lattice. U…
Quantum spin spiral ground state of the ferrimagnetic sawtooth chain
Roman Rausch, Matthias Peschke, Cassian Plorin +2
The ferrimagnetic phase of the sawtooth chain with mixed ferromagnetic nearest-neighbour interactions and antiferromagnetic next-nearest-neighbour interactions (within the…
Magnetic properties of a capped kagome molecule with 60 quantum spins
Roman Rausch, Matthias Peschke, Cassian Plorin +1
We compute ground-state properties of the isotropic, antiferromagnetic Heisenberg model on the sodalite cage geometry. This is a 60-spin spherical molecule with 24 vertex-sharing t…
The antiferromagnetic Heisenberg model on the fullerene geometry
Roman Rausch, Cassian Plorin, Matthias Peschke
We solve the quantum-mechanical antiferromagnetic Heisenberg model with spins positioned on vertices of the truncated icosahedron using the density-matrix renormalization group (DM…
Topological phases arising from attractive interaction and pair hopping in the Extended Hubbard Model
Roman Rausch, Matthias Peschke
The extended Hubbard model with an attractive density-density interaction, positive pair hopping, or both, is shown to host topological phases, with a doubly degenerate entanglemen…