Zobrazeno 31 - 40
of 214
pro vyhledávání: '"Amaricci, A."'
Publikováno v:
Phys. Rev. B 94, 245146 (2016)
The magnetic properties of zig-zag graphene nanoflakes (ZGNF) are investigated within the framework of the dynamical mean-field theory. At half-filling and for realistic values of the local interaction, the ZGNF is in a fully compensated antiferromag
Externí odkaz:
http://arxiv.org/abs/1609.08812
Akademický článek
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Publikováno v:
Phys. Rev. B 93, 235112 (2016)
We investigate the role of short-ranged electron-electron interactions in a paradigmatic model of three dimensional topological insulators, using dynamical mean-field theory and focusing on non magnetically ordered solutions. The non-interacting band
Externí odkaz:
http://arxiv.org/abs/1603.04263
Publikováno v:
Phys. Rev. Lett. 117, 176401 (2016)
Mott insulators can be portrayed as "unsuccessful metals": systems in which a strong Coulomb repulsion prevents charge conduction notwithstanding the metal-like density of conduction electrons. The possibility to unlock such large density of frozen c
Externí odkaz:
http://arxiv.org/abs/1602.03138
Publikováno v:
Phys. Rev. B 91, 195124 (2015)
We investigate by means of the time-dependent Gutzwiller approximation the transport properties of a strongly-correlated slab subject to Hubbard repulsion and connected with to two metallic leads kept at a different electrochemical potential. We focu
Externí odkaz:
http://arxiv.org/abs/1412.6415
Publikováno v:
Phys. Rev. Lett. 114, 185701 (2015)
Topological quantum phase transitions are characterised by changes in global topological invariants. These invariants classify many body systems beyond the conventional paradigm of local order parameters describing spontaneous symmetry breaking. For
Externí odkaz:
http://arxiv.org/abs/1411.7390
Autor:
Amaricci, A., Capone, M.
Publikováno v:
Phys. Rev. B 93, 014508 - Published 15 January 2016
Using dynamical mean-field theory (DMFT) we study a simplified model for heterostructures involving superconductors. The system is driven out-of-equilibrium by a voltage bias, imposed as an imbalance of chemical potential at the interface. We solve t
Externí odkaz:
http://arxiv.org/abs/1411.2347
Autor:
Novelli, Fabio, De Filippis, Giulio, Cataudella, Vittorio, Esposito, Martina, Kausel, Ignacio Vergara, Cilento, Federico, Sindici, Enrico, Amaricci, Adriano, Giannetti, Claudio, Prabhakaran, Dharmalingam, Wall, Simon, Perucchi, Andrea, Conte, Stefano Dal, Cerullo, Giulio, Capone, Massimo, Mishchenko, Andrey, Grüninger, Markus, Nagaosa, Naoto, Parmigiani, Fulvio, Fausti, Daniele
Publikováno v:
Nature Communications 5, Article number: 5112, 2014
The non-equilibrium semiconductors physics is based on the paradigm that different degrees of freedom interact on different timescales. In this context the photo-excitation is often treated as an impulsive injection of electronic energy that is trans
Externí odkaz:
http://arxiv.org/abs/1403.1704
By means of Dynamical Mean-Field Theory we investigate the spin response function of a model for correlated materials with d- or f-electrons hybridized with more delocalized ligand orbitals. We point out the existence of two different processes respo
Externí odkaz:
http://arxiv.org/abs/1310.3043
Publikováno v:
Phys. Rev. A 89, 053604 (2014)
The BCS-BEC crossover in a lattice is a powerful paradigm to understand how a superconductor deviates from the Bardeen-Cooper-Schrieffer physics as the attractive interaction increases. Optical lattices loaded with binary mixtures of cold atoms allow
Externí odkaz:
http://arxiv.org/abs/1310.0211