Zobrazeno 1 - 10
of 213
pro vyhledávání: '"Amaricci, A."'
Topological phase transitions are typically associated with the formation of gapless states. Spontaneous symmetry breaking can lead to a gap opening thereby obliterating the topological nature of the system. Here we highlight a completely different d
Externí odkaz:
http://arxiv.org/abs/2311.10024
Autor:
Kowalski, A., Reitner, M., Del Re, L., Chatzieleftheriou, M., Amaricci, A., Toschi, A., Medici, L. de', Sangiovanni, G., Schäfer, T.
We show how the stability conditions for a system of interacting fermions that conventionally involve variations of thermodynamic potentials can be rewritten in terms of local one- and two-particle correlators. We illustrate the applicability of this
Externí odkaz:
http://arxiv.org/abs/2309.11108
Publikováno v:
Phys. Rev. B 109, 115104 (2024)
The possibility to directly measure, in a cold-atom quantum simulator, the von Neumann entropy and mutual information between a site and its environment opens new perspectives on the characterization of the Mott-Hubbard metal-insulator transition, in
Externí odkaz:
http://arxiv.org/abs/2308.13706
We study the conditions to realize an excitonic condensed phase in an electron-hole bilayer system with local Hubbard-like interactions at half-filling, where we can address the interplay with Mott localization. Using Dynamical Mean-Field Theory, we
Externí odkaz:
http://arxiv.org/abs/2307.07348
Autor:
Wagner, Niklas, Crippa, Lorenzo, Amaricci, Adriano, Hansmann, Philipp, Klett, Marcel, König, Elio, Schäfer, Thomas, Di Sante, Domenico, Cano, Jennifer, Millis, Andrew, Georges, Antoine, Sangiovanni, Giorgio
Publikováno v:
Nature Communication 14, 7531 (2023)
The topological classification of electronic band structures is based on symmetry properties of Bloch eigenstates of single-particle Hamiltonians. In parallel, topological field theory has opened the doors to the formulation and characterization of n
Externí odkaz:
http://arxiv.org/abs/2301.05588
Time reversal symmetric topological insulators are generically robust with respect to weak local interaction, unless symmetry breaking transitions take place. Using dynamical mean-field theory we solve an interacting model of quantum spin Hall insula
Externí odkaz:
http://arxiv.org/abs/2212.05878
Autor:
Mazza, Giacomo, Amaricci, Adriano
Publikováno v:
Physical Review B 106, L241104 (2022)
We consider dressing of excitonic properties by strongly correlated electrons in gate controlled twisted homo-bilayer heterostructures. The combined effect of the moir\'e potential and the Coulomb interaction supports the formation of different stron
Externí odkaz:
http://arxiv.org/abs/2209.09360
Autor:
N. Wagner, L. Crippa, A. Amaricci, P. Hansmann, M. Klett, E. J. König, T. Schäfer, D. Di Sante, J. Cano, A. J. Millis, A. Georges, G. Sangiovanni
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract The topological classification of electronic band structures is based on symmetry properties of Bloch eigenstates of single-particle Hamiltonians. In parallel, topological field theory has opened the doors to the formulation and characteriza
Externí odkaz:
https://doaj.org/article/16042fd0974e4a5a8876a0a0e64460c9
Autor:
Chatzieleftheriou, Maria, Kowalski, Alexander, Berović, Maja, Amaricci, Adriano, Capone, Massimo, De Leo, Lorenzo, Sangiovanni, Giorgio, Medici, Luca de'
Publikováno v:
Phys.Rev.Lett 130, 066401 (2023)
Strongly correlated materials often undergo a Mott metal-insulator transition, which is tipically first-order, as a function of control parameters like pressure. Upon doping, rich phase diagrams with competing instabilities are found. Yet, the concep
Externí odkaz:
http://arxiv.org/abs/2203.02451
We study the interplay between electron-electron interaction and a Jahn-Teller phonon coupling in a two-orbital Hubbard model. We demonstrate that the e-ph interaction coexists with the Mott localization driven by the Hubbard repulsion U, but it comp
Externí odkaz:
http://arxiv.org/abs/2111.14663