Zobrazeno 1 - 10
of 361
pro vyhledávání: '"Fiorentini V"'
Autor:
De Renzi, R., Coneri, F., Mezzadri, F., Allodi, G., Calestani, G., Righi, L., Lopez, G. M., Fiorentini, V., Filippetti, A., Sanna, S.
Publikováno v:
Journal of Physics: Condensed Matter, 31, 184002 (2019)
We investigate the specific influence of structural disorder on the suppression of antiferromagnetic order and on the emergence of cuprate superconductivity. We single out pure disorder, by focusing on a series of Y$_{z}$Eu$_{1-z}$Ba$_2$Cu$_3$O$_{6+y
Externí odkaz:
http://arxiv.org/abs/1811.04668
Autor:
Pallecchi, I., Telesio, F., Li, D., Fête, A., Gariglio, S., Triscone, J. -M., Filippetti, A., Delugas, P., Fiorentini, V., Marré, D.
Publikováno v:
Nature Comm. 6, 6678 (2015)
Understanding the nature of charge carriers at the LaAlO3/SrTiO3 interface is one of the major open issues in the full comprehension of the charge confinement phenomenon in oxide heterostructures. Here, we investigate thermopower to study the electro
Externí odkaz:
http://arxiv.org/abs/1504.01901
Publikováno v:
J. Phys.: Conf. Ser. 566, 012016 (2014)
We study the electronic and local structural properties of pure and In-substituted $\beta$-Ga$_2$O$_3$ using density functional theory (DFT). Our main result is that the structural energetics of In in Ga$_2$O$_3$ causes most sites to be essentially i
Externí odkaz:
http://arxiv.org/abs/1408.6951
Autor:
Alippi, P., Fiorentini, V.
Publikováno v:
Eur. Phys. J. B 85, 82 (2012)
We study a selection of Cu-containing magnetic quadruple perovskites (CaCu$_{3}$Ti$_{4}$O$_{12}$, LaCu$_{3}$Fe$_{4}$O$_{12}$, and YCu$_{3}$Co$_{4}$O$_{12}$) by ab initio calculations, and show that Cu is in an effective divalent Cu(II)-like state or
Externí odkaz:
http://arxiv.org/abs/1309.5186
Publikováno v:
Physical Review B 88, 045310 (2013)
Using advanced ab-initio calculations, we describe the formation and confinement of a two-dimensional electron gas in short-period ($\simeq$4 nm) Nb-doped SrTiO$_3$ superlattices as function of Nb doping. We predict complete two-dimensional confineme
Externí odkaz:
http://arxiv.org/abs/1309.4964
Publikováno v:
Physical Review B 88, 115304 (2013)
Using advanced first-principles calculations we predict that the non-polar SrTiO$_3$/SrZrO$_3$ (001) interface, designed as either thin SrZrO$_3$ film deposited on SrTiO$_3$ or short-period (SrTiO$_3$)$_m$/(SrZrO$_3$)$_n$ superlattice, host a 2-dimen
Externí odkaz:
http://arxiv.org/abs/1309.4965
We present a fully variational generalization of the pseudo self-interaction correction (VPSIC) approach previously presented in two implementations based on plane-waves and atomic orbital basis set, known as PSIC and ASIC, respectively. The new meth
Externí odkaz:
http://arxiv.org/abs/1106.5993
Autor:
Archer, T., Pemmaraju, C. D., Sanvito, S., Franchini, C., He, J., Filippetti, A., Delugas, P., Puggioni, D., Fiorentini, V., Tiwari, R., Majumdar, P.
The magnetic properties of the transition metal monoxides MnO and NiO are investigated at equilibrium and under pressure via several advanced first-principles methods coupled with Heisenberg Hamiltonian MonteCarlo. The comparative first-principles an
Externí odkaz:
http://arxiv.org/abs/1105.0647
Autor:
Fiorentini, V.
Intentionally-produced inversion domain boundaries in GaN have been reported to be highly efficient recombination centers. Here I report a rationale for this phenomenon based on ab initio density-functional calculations. I also propose a model, based
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210192
Autor:
Fiorentini, V., Gulleri, G.
Parameters determining the performance of the crystalline oxides zirconia (ZrO_2) and hafnia (HfO_2) as gate insulators in nanometric Si electronics are estimated via ab initio calculations of the energetics, dielectric properties, and band alignment
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208149