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We theoretically investigate the quantum percolation problem on Lieb lattices in two and three dimensions. We study the statistics of the energy levels through random matrix theory, and determine the level spacing distributions, which, with the aid o
Externí odkaz:
http://arxiv.org/abs/2409.04610
We study site- and bond-percolation on a class of lattices referred to as Lieb lattices. In two dimensions the Lieb lattice (LL) is also known as the decorated square lattice, or as the CuO$_2$ lattice; in three dimensions it can be generalized to a
Externí odkaz:
http://arxiv.org/abs/2109.11384
Giant magneto-impedance effect in amorphous CoP@Cu microstrip based device in a wide frequency range
Autor:
Iglesias, C.A.M. a, D. M. de Lima, J. a, Souza, E.C. a, Sinnecker, J.P. b, Padrón-Hernández, E. a, Rezende, S.M. a, Machado, F.L.A. a, ⁎
Publikováno v:
In Journal of Magnetism and Magnetic Materials 1 June 2024 599
Publikováno v:
Eur. Phys. J. Plus (2021) 136:551
Since electrons in a ballistic regime perceive a carbon nanotube or a graphene layer structure as a continuous medium, we can use the study of the quantum dynamics of one electron constrained to a curve or surface to obtain a qualitative description
Externí odkaz:
http://arxiv.org/abs/2103.00610
Publikováno v:
Phys. Rev. B 101, 165109 (2020)
In itinerant systems, electron-electron interactions may lead to the formation of local magnetic moments and their effective exchange coupling, which in turn gives rise to long-range magnetic order. Therefore, when moment formation is weakened, such
Externí odkaz:
http://arxiv.org/abs/1912.04918
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A nanostructured trigonal SnSe2 was produced by mechanical alloying, and the effect of high-pressures up to 25.8 GPa on it was investigated. The literature reports refined structural data for SnS2 for pressures up to 20 GPa. These data were used as i
Externí odkaz:
http://arxiv.org/abs/1803.05430
An approach combining the Rietveld method and pairs distribution function analysis to study crystalline materials under high pressure or temperature was early proposed by us, and in this study, it was applied to investigate de effect of high pressure
Externí odkaz:
http://arxiv.org/abs/1803.02479
An approach combining the Rietveld method and pairs distribution function analysis was developed and can help to understand the effect of temperature and/or high-pressure on crystalline materials. It was applied to orthorhombic Ta2O5 compound, and th
Externí odkaz:
http://arxiv.org/abs/1802.04648