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- Centre National de la Recherche ScientifiqueFR40 papers
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28 papers · 1 filter
Mott-Hubbard transition in V2O3 revisited
P. Hansmann, A. Toschi, G. Sangiovanni +4
The isostructural metal-insulator transition in Cr-doped V2O3 is the textbook example of a Mott-Hubbard transition between a paramagnetic metal and a paramagnetic insulator. We rev…
Conserved quantities of SU(2)-invariant interactions for correlated fermions and the advantages for quantum Monte Carlo simulations
Nicolaus Parragh, Alessandro Toschi, Karsten Held +1
In the context of realistic calculations for strongly-correlated materials with - or -electrons the efficient computation of multi-orbital models is of paramount importance.…
Kinks in the periodic Anderson model
A. Kainz, A. Toschi, R. Peters +1
Recently, dynamical mean field theory calculations have shown that kinks emerge in the real part of the self energy of strongly correlated metals close to the Fermi level. This giv…
Evolution of c-f hybridization and two component Hall effect in β-YbAlB_4
E. C. T. O'Farrell, Y. Matsumoto, S. Nakatsuji
β-YbAlB_4 is the unique heavy fermion superconductor that exhibits unconventional quantum criticality without tuning in a strongly intermediate valence state. Despite the large coh…
Terahertz Quantum Hall Effect in a Topological Insulator
A. M. Shuvaev, G. V. Astakhov, G. Tkachov +4
Using THz spectroscopy in external magnetic fields we investigate the low-temperature charge dynamics of strained HgTe, a three dimensional topological insulator. From the Faraday…
Evidence of a bond-nematic phase in LiCuVO4
M. Mourigal, M. Enderle, B. Fåk +5
Polarized and unpolarized neutron scattering experiments on the frustrated ferromagnetic spin-1/2 chain LiCuVO4 show that the phase transition at HQ of 8 Tesla is driven by quadrup…