Zobrazeno 1 - 10
of 652
pro vyhledávání: '"Fratini S"'
We carefully revisit the electron-boson scattering problem, going beyond popular semi-classical treatments. By providing numerically exact results valid at finite temperatures, we demonstrate the existence of a regime of electron-boson scattering whe
Externí odkaz:
http://arxiv.org/abs/2312.03840
We study long-range interacting electrons on the triangular lattice using mixed quantum/classical simulations going beyond the usual classical descriptions of the lattice Coulomb fluid. Our results in the strong interaction limit indicate that the em
Externí odkaz:
http://arxiv.org/abs/2208.06260
Autor:
Fratini, S., Ciuchi, S.
Publikováno v:
SciPost Phys. 11, 039 (2021)
Scattering by slowly fluctuating degrees of freedom can cause a transient localization of the current-carrying electrons in metals, driving the system away from normal metallic behavior. We illustrate and characterize this general phenomenon by study
Externí odkaz:
http://arxiv.org/abs/2104.01075
Autor:
Fratini, S., Ciuchi, S.
Publikováno v:
Phys. Rev. Research 2, 013001 (2020)
Bloch-Boltzmann transport theory fails to describe the carrier diffusion in current crystalline organic semiconductors, where the presence of large-amplitude thermal molecular motions causes substantial dynamical disorder. The charge transport mechan
Externí odkaz:
http://arxiv.org/abs/1903.12603
Autor:
Pustogow, A., Saito, Y., Zhukova, E., Gorshunov, B., Kato, R., Lee, T. -H., Fratini, S., Dobrosavljević, V., Dressel, M.
Publikováno v:
Phys. Rev. Lett. 121, 056402 (2018)
The electrodynamic response of organic spin liquids with highly-frustrated triangular lattices has been measured in a wide energy range. While the overall optical spectra of these Mott insulators are governed by transitions between the Hubbard bands,
Externí odkaz:
http://arxiv.org/abs/1803.01553
Autor:
Pustogow, A., Bories, M., Löhle, A., Rösslhuber, R., Zhukova, E., Gorshunov, B., Tomić, S., Schlueter, J. A., Hübner, R., Hiramatsu, T., Yoshida, Y., Saito, G., Kato, R., Lee, T. -H., Dobrosavljević, V., Fratini, S., Dressel, M.
Publikováno v:
Nat. Mater. 17, 773-777 (2018)
The Widom line identifies the locus in the phase diagram where a supercritical gas crosses over from gas-like to a more liquid-like behavior. A similar transition exists in correlated electron liquids, where the interplay of Coulomb repulsion, bandwi
Externí odkaz:
http://arxiv.org/abs/1710.07241
Publikováno v:
Advanced Functional Materials 26, 2292 (2016)
Charge transport in crystalline organic semiconductors is intrinsically limited by the presence of large thermal molecular motions, which are a direct consequence of the weak van der Waals inter-molecular interactions. These lead to an original regim
Externí odkaz:
http://arxiv.org/abs/1505.02686
Publikováno v:
C. F\'evrier, S. Fratini, A. Ralko, Phys. Rev. B 91, 245111 (2015)
The role of the multiorbital effects on the emergence of frustrated electronic orders on the triangular lattice at half filling is investigated through an extended spinless fermion Hubbard model. By using two complementary approaches, unrestricted Ha
Externí odkaz:
http://arxiv.org/abs/1503.05714
Autor:
Oliva, M., De Marchi, L., Cuccaro, A., Casu, V., Tardelli, F., Monni, G., Freitas, R., Caliani, I., Fossi, M.C., Fratini, S., Baratti, M., Pretti, C.
Publikováno v:
In Comparative Biochemistry and Physiology, Part C September 2019 223:71-77
Autor:
Ciuchi, S., Fratini, S.
Publikováno v:
Phys. Rev. B 86, 245201 (2012)
We explore the charge transport mechanism in organic semiconductors based on a model that accounts for the thermal intermolecular disorder at work in pure crystalline compounds, as well as extrinsic sources of disorder that are present in current exp
Externí odkaz:
http://arxiv.org/abs/1210.1673