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We analyze cellular dynamical mean-field theory (CDMFT) and the dynamical cluster approximation (DCA). We derive exact sum-rules for the hybridization functions and give examples for dynamical… (More)

- Leonetta Baldassarre, Alessandro Perucchi, +10 authors Sergio Lupi
- 2008

The infrared conductivity of ${\mathrm{V}}_{2}{\mathrm{O}}_{3}$ is measured in the whole phase diagram. Quasiparticles appear above the N\'eel temperature ${T}_{N}$ and eventually disappear further… (More)

- Sergio Lupi, Leonetta Baldassarre, +18 authors Marino Marsi
- Nature communications
- 2010

V(2)O(3) is the prototype system for the Mott transition, one of the most fundamental phenomena of electronic correlation. Temperature, doping or pressure induce a metal-to-insulator transition (MIT)… (More)

- Elias Assmann, Peter Blaha, Robert Laskowski, Karsten Held, Satoshi Okamoto, Giorgio Sangiovanni
- Physical review letters
- 2013

We propose an unexplored class of absorbing materials for high-efficiency solar cells: heterostructures of transition-metal oxides. In particular, LaVO(3) grown on SrTiO(3) has a direct band gap ∼1.1… (More)

- Ciro Taranto, Merzuk Kaltak, +4 authors Karsten Held
- 2013

aK otaniSchilfgaarde is employed, and the interaction values are obtained from the locally unscreened random phase approximation (RPA) using a projection onto Wannier orbitals. We compare… (More)

- Giorgio Sangiovanni, Massimo Capone, Claudio Castellani, M Grilli
- Physical review letters
- 2005

The effect of Holstein electron-phonon interaction on a Hubbard model close to a Mott-Hubbard transition at half filling is investigated by means of dynamical mean-field theory. We observe a… (More)

We compare different methods for performing analytical continuation of spectral data from the imaginary time or frequency axis to the real frequency axis for the optical conductivity . We compare the… (More)

- Fanny Rodolakis, P. Hansmann, +14 authors Marino Marsi
- Physical review letters
- 2010

The changes in the electronic structure of V2O3 across the metal-insulator transition induced by temperature, doping, and pressure are identified using high resolution x-ray absorption spectroscopy… (More)

In the context of realistic calculations for strongly correlated materials with $d$ or $f$ electrons the efficient computation of multi-orbital models is of paramount importance. Here we introduce a… (More)

- D. Reznik, Giorgio Sangiovanni, O. H. Gunnarsson, Thomas P Devereaux
- Nature
- 2008

Arising from: F. Giustino, M. L. Cohen & S. G. Louie 452, 975–978 (2008)10.1038/nature06874One of the possible mechanisms of high transition temperature (Tc) superconductivity is Cooper pairing with… (More)