Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Ventura, C. I."'
In a world being hit by waves of COVID-19, vaccination is a light on the horizon. However, the roll-out of vaccination strategies and their influence on the pandemic are still open problems. In order to compare the effect of various strategies propos
Externí odkaz:
http://arxiv.org/abs/2104.09590
Publikováno v:
Phys. Rev. Materials 3, 024602 (2019)
Several approaches have been used to investigate the impact of Nitrogen (N) on the electronic structure of GaAs$_{1-x}$N$_{x}$ alloys, however, there is no agreement between theory and experiments about the importance of the different N interstitial
Externí odkaz:
http://arxiv.org/abs/1808.02142
CaCu$_3$Fe$_4$O$_{12}$ exhibits a temperature-induced transition from a ferrimagnetic-insulating phase, in which Fe appears charge disproportionated, as Fe$^{3+}$ and Fe$^{5+}$, to a paramagnetic-metallic phase at temperatures above 210 K, with Fe$^{
Externí odkaz:
http://arxiv.org/abs/1804.05726
Publikováno v:
Journal of Applied Physics 120, 105705 (2016)
The existence of non-substitutional $\beta$-Sn defects in Ge$_{1-x}$Sn$_{x}$ was confirmed by emission channeling experiments [Decoster et al., Phys. Rev. B 81, 155204 (2010)], which established that although most Sn enters substitutionally ($\alpha$
Externí odkaz:
http://arxiv.org/abs/1603.04802
Publikováno v:
EPL 113, 17005 (2016)
We present $\beta$-FeSe magnetotransport data, and describe them theoretically. Using a simplified microscopic model with two correlated effective orbitals, we determined the normal state electrical conductivity and Hall coefficient, using Kubo forma
Externí odkaz:
http://arxiv.org/abs/1512.00813
Publikováno v:
Physica B: Condensed Matter, 488, 32 (2016)
A good description of the electronic structure of BiS$_{2}$-based superconductors is essential to understand their phase diagram, normal state and superconducting properties. To describe the first reports of normal state electronic structure features
Externí odkaz:
http://arxiv.org/abs/1512.00382
Publikováno v:
Physics Letters A 380, 1648 (2016)
Using a second-order perturbative Green's functions approach we determined the normal state single-particle spectral function $A(\vec{k},\omega)$ employing a minimal effective model for iron-based superconductors. The microscopic model, used before t
Externí odkaz:
http://arxiv.org/abs/1502.08042
Autor:
Buitrago, Ivon R., Ventura, C. I.
Publikováno v:
Journal of Superconductivity and Novel Magnetism: Volume 26, Issue 6 (2013), Page 2303-2305
We investigate magnetic excitations in half-doped colossal magnetoresistance manganites. In particular, we focus on spin excitations in the CE phase originally proposed by Goodenough (Phys. Rev. 100, 564 (1955)). Using a localized spin model we calcu
Externí odkaz:
http://arxiv.org/abs/1310.6714
Ge_(1-x)Sn_x alloys have proved difficult to form at large x, contrary to what happens with other group IV semiconductor combinations. However, at low x they are typical examples of well-behaved substitutional compounds, which is desirable for harnes
Externí odkaz:
http://arxiv.org/abs/0807.5025
Autor:
Acquarone, M., Ventura, C. I.
Recent inelastic neutron scattering experiments in CeIn$_{3}$ and CePd$_{2}$Si$_{2}$ single crystals measured spin wave excitations at low temperatures. These two heavy fermion compounds exhibit antiferromagnetic long-range order, but a strong compet
Externí odkaz:
http://arxiv.org/abs/0807.1246