Zobrazeno 1 - 10
of 216
pro vyhledávání: '"A. Amaricci"'
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
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.
Publikováno v:
Phys. Rev. Lett. 133, 066502 (2024)
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 one- and two-particle correlators. We illustrate the applicability of this alter
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
Autor:
N. Nilforoushan, M. Casula, M. Caputo, E. Papalazarou, J. Caillaux, Z. Chen, L. Perfetti, A. Amaricci, D. Santos-Cottin, Y. Klein, A. Gauzzi, M. Marsi
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043397 (2020)
By means of time- and angle-resolved photoelectron spectroscopy, we give evidence of a remarkable reduction of the Fermi velocity of out-of-equilibrium Dirac bands in the quasi-two-dimensional semimetal BaNiS_{2}. This effect is accompanied by a nonr
Externí odkaz:
https://doaj.org/article/c9d8a928c88943169e3897354e59429f
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013298 (2020)
Vanadium dioxide is one of the most studied strongly correlated materials. Nonetheless, the intertwining between electronic correlation and lattice effects has precluded a comprehensive description of the rutile metal to monoclinic insulator transiti
Externí odkaz:
https://doaj.org/article/7a1f6f9a9b774a5ea07c38f4283c5dcb
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 012023 (2020)
Weyl semimetals (WSMs) are characterized by topologically stable pairs of nodal points in the band structure that typically originate from splitting a degenerate Dirac point by breaking symmetries such as time-reversal or inversion symmetry. Within t
Externí odkaz:
https://doaj.org/article/85ebe889da114221a06f13abf79621af
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