Zobrazeno 1 - 10
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pro vyhledávání: '"Ciuchi, Sergio"'
Autor:
Poli, Arianna, Wagner, Niklas, Fischer, Max, Toschi, Alessandro, Sangiovanni, Giorgio, Ciuchi, Sergio
We investigate the quasi-particle and transport properties of a model describing interacting Dirac and Weyl semimetals in the presence of local Hubbard repulsion $U$, where we explicitly include a deviation from the linearity of the energy-momentum d
Externí odkaz:
http://arxiv.org/abs/2310.03653
Publikováno v:
Phys. Rev. Lett. 131, 196303 (2023)
We present a theory for band-tuned metal-insulator transitions based on the Kubo formalism. Such a transition exhibits scaling of the resistivity curves, in the regime where $T\tau >1$ or $\mu \tau>1$, where $\tau$ is the scattering time and $\mu$ th
Externí odkaz:
http://arxiv.org/abs/2307.09292
Autor:
Ciuchi, Sergio, Fratini, Simone
Publikováno v:
Phys. Rev. B 108, 235173 (2023)
We study metallic transport in an effective model that describes the coupling of electrons to fluctuating magnetic moments with full SU(2) symmetry, exhibiting characteristic behavior of metals at the approach of the Mott transition. We show that sca
Externí odkaz:
http://arxiv.org/abs/2306.12496
Publikováno v:
Phys. Rev. Lett. 126, 206601 (2021)
We study the resistivity of three-dimensional semimetals with linear dispersion in the presence of on-site electron-electron interaction. The well-known quadratic temperature dependence of the resistivity of conventional metals is turned into an unus
Externí odkaz:
http://arxiv.org/abs/2012.07886
Akademický článek
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Publikováno v:
J. Phys.: Condens. Matter 30 (2018) 465902
We present an inhomogeneous dynamical mean field theory (I-DMFT) that is suitable to investigate electron-lattice interactions in non-translationally invariant and/or inhomogeneous systems. The presented approach, whose only assumption is that of a l
Externí odkaz:
http://arxiv.org/abs/1806.04543
Publikováno v:
Phys. Rev. B 98, 235107 (2018)
Two-particle generalized susceptibilities and their irreducible vertex functions play a prominent role in the quantum many-body theory for correlated electron systems. They act as basic building blocks in the parquet formalism which provides a flexib
Externí odkaz:
http://arxiv.org/abs/1805.00989
Publikováno v:
npj Quantum Materials 3, 44 (2018)
Sufficiently disordered metals display systematic deviations from the behavior predicted by semi-classical Boltzmann transport theory. Here the scattering events from impurities or thermal excitations can no longer be considered as additive independe
Externí odkaz:
http://arxiv.org/abs/1802.00065
Publikováno v:
Phys. Rev. B 95, 235128 (2017)
A spin-1 atomic gas in an optical lattice, in the unit-filling Mott Insulator (MI) phase and in the presence of disordered spin-dependent interaction, is considered. In this regime, at zero temperature, the system is well described by a disordered ro
Externí odkaz:
http://arxiv.org/abs/1702.01765
Publikováno v:
Phys. Rev. Lett. 118, 036602 (2017)
We show that in presence of a deformable lattice potential, the nature of the disorder-driven metal-insulator transition (MIT) is fundamentally changed with respect to the non-interacting (Anderson) scenario. For strong disorder, even a modest electr
Externí odkaz:
http://arxiv.org/abs/1604.07816