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17 papers · 2 filters
Impact of strong electronic correlations on altermagnets: the case of NiS2
Ina Park, Turan Birol, Antoine Georges +1
One of the distinguishing features of an altermagnet is that its spin-up and spin-down bands display a nodal momentum-dependent splitting even in the absence of spin-orbit coupling…
Non-Fermi-liquid behaviour and Fermi-surface expansion induced by van Hove-driven ferromagnetic fluctuations: the D-TRILEX analysis
Ilia S. Dedov, Andrey A. Katanin, Evgeny A. Stepanov
We consider the electronic and magnetic properties of the Hubbard model on a square lattice with the Fermi level near van Hove singularity and the ratio of the next-nearest-neighbo…
5d-mediated indirect exchange and effective spin Hamiltonians in Ce triangular-lattice delafossites
Leonid V. Pourovskii
Anisotropic intersite exchange interactions in frustrated rare-earth magnets are difficult to assess both theoretically and experimentally. Here, we propose an ab initio force-theo…
Comparing Symmetrized Determinant Neural Quantum States for the Hubbard Model
Louis Sharma, Ahmedeo Shokry, Rajah Nutakki +3
Accurate simulations of the Hubbard model are crucial to understanding strongly correlated phenomena, where small energy differences between competing orders demand high numerical…
Spin-polaron fingerprints in the optical conductivity of iridates
Francesco Cassol, Léo Gaspard, Cyril Martins +2
As a consequence of their spin-orbit entangled ground state, many iridate materials display a peculiar double peak structure in optical transport quantities, such as absor…
Ab initio spin Hamiltonians and magnetism of Ce and Yb triangular-lattice compounds
Leonid V. Pourovskii, Rafael D. Soares, Alexander Wietek
We calculate the crystal-field splitting, ground-state Kramers doublet and intersite exchange interactions within the ground-state doublet manifold using an ab initio Hubbard-I bas…