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74 papers · 1 filter
Tetrahedral Core in a Sea of Competing Magnetic Phases in Graphene
Maxime Lucas, Arnaud Ralko, Andreas Honecker +1
We demonstrate the emergence of a robust tetrahedral magnetic ground state in monolayer graphene doped to the van Hove singularity (vHS). This noncoplanar, gapped spin configuratio…
Non-Landau quantum phase transition in modulated SU(N) Heisenberg spin chains
Sylvain Capponi, Lukas Devos, Philippe Lecheminant +2
We investigate the nature of the quantum phase transition in modulated SU(N) Heisenberg spin chains. In the odd-N case, the transition separates a trivial non-degenerate phase to a…
Thermodynamic properties of the macroscopically degenerate tetramer-dimer phase of the spin-1/2 Heisenberg model on the diamond-decorated square lattice
Katarina Karlova, Andreas Honecker, Nils Caci +3
The spin-1/2 Heisenberg antiferromagnet on the diamond-decorated square lattice in the presence of a magnetic field displays various quantum phases including the Lieb-Mattis ferrim…
Anomalous thermal broadening in the Shastry-Sutherland model and SrCuBO
Zhenjiu Wang, Paul McClarty, Dobromila Dankova +2
The quantum magnet SrCuBO and its remarkably accurate theoretical description, the spin- Shastry-Sutherland model, host a variety of intriguing phenomena such as a…
Spectroscopy and complex-time correlations using minimally entangled typical thermal states
Zhenjiu Wang, Paul McClarty, Dobromila Dankova +2
Tensor network states have enjoyed great success at capturing aspects of strong correlation physics. However, obtaining dynamical correlators at non-zero temperatures is genericall…
Lieb-Schultz-Mattis constraints for the insulating phases of the one-dimensional SU() Kondo lattice model
Philippe Lecheminant, Keisuke Totsuka
The nature of the insulating phases of the SU()-generalization of the one-dimensional Kondo lattice model is investigated by means of non-perturbative approaches. By extending t…