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18 papers · 2 filters
Multipolar interactions and magnetic excitation gap in d spin-orbit Mott insulators
Leonid V. Pourovskii
In Mott insulators with a half-filled shell the Hund's rule coupling induces a spin-3/2 orbital-singlet ground state. The spin-orbit interaction is not expected to qualita…
Distinct spin and orbital dynamics in SrRuO
H. Suzuki, L. Wang, J. Bertinshaw +13
The unconventional superconductor SrRuO has long served as a benchmark for theories of correlated-electron materials. The determination of the superconducting pairing mecha…
Multi-channel fluctuating field approach to competing instabilities in interacting electronic systems
E. Linnér, A. I. Lichtenstein, S. Biermann +1
Systems with strong electronic Coulomb correlations often display rich phase diagrams exhibiting different ordered phases involving spin, charge, or orbital degrees of freedom. The…
Symmetry-broken perturbation theory to large orders in antiferromagnetic phases
R. Garioud, F. Šimkovic, R. Rossi +4
We introduce a spin-symmetry-broken extension of the connected determinant algorithm [Phys. Rev. Lett. 119, 045701 (2017)]. The resulting systematic perturbative expansions around…
Origin and fate of the pseudogap in the doped Hubbard model
Fedor Simkovic, Riccardo Rossi, Antoine Georges +1
We investigate the doped two-dimensional Hubbard model at finite temperature using controlled diagrammatic Monte Carlo calculations allowing for the computation of spectral propert…
The dimer system KNi(MoO): a candidate for magnon Bose-Einstein condensation
B. Lenz, B. Koteswararao, S. Biermann +3
Dimerized quantum magnets provide a unique possibility to investigate Bose-Einstein condensation of magnetic excitations in crystalline systems at low temperature. Here, we model t…