25 citations · 64 across the 9 of their papers we have counts for
9 papers
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…
Matrix-product state approach to the generalized nuclear pairing Hamiltonian
Roman Rausch, Cassian Plorin, Matthias Peschke +1
We show that from the point of view of the generalized pairing Hamiltonian, the atomic nucleus is a system with small entanglement and can thus be described efficiently using a 1D…
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…
Phase diagram of the Kondo model on the zigzag ladder
Matthias Peschke, Lena-Marie Woelk, Michael Potthoff
The effect of next-nearest-neighbor hopping on the ground-state phase diagram of the one-dimensional Kondo lattice is studied with density-matrix renormalization-group tech…
Frustrated quantum magnetism in the Kondo lattice on the zigzag ladder
Matthias Peschke, Roman Rausch, Michael Potthoff
The interplay between Kondo effect, indirect magnetic interaction and geometrical frustration is studied in the Kondo lattice on the one-dimensional zigzag ladder. Using the densit…