Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Sardella, Edson"'
This study explores transitions between states with different winding number in two-band superconducting rings. From the time-dependent Ginzburg-Landau (TDGL) equations for two-component superconductors, we apply linear instability theory and develop
Externí odkaz:
http://arxiv.org/abs/2408.13584
Publikováno v:
Physica C: Superconductivity and its Applications, Volume 622, 2024
In this work we study the role of the heat diffusion equation in simulating the resistive state of superconducting films. By analyzing the current-voltage and current-resistance characteristic curves for temperatures close to $T_c$ and various heat r
Externí odkaz:
http://arxiv.org/abs/2405.10415
Publikováno v:
Phys. Rev. Applied 21, 054040, 2024
We propose a superconducting diode device comprising a central superconducting film flanked by two wires carrying an applied DC bias, suitably chosen so as to generate different asymmetric field profiles. Through numerical simulations of the coupled
Externí odkaz:
http://arxiv.org/abs/2403.00630
Autor:
Cadorim, Leonardo Rodrigues, de Toledo, Lucas Veneziani, Ortiz, Wilson Aires, Berger, Jorge, Sardella, Edson
By using the full 3D generalized time dependent Ginzbug-Landau equation we study a long superconducting film of finite width and thickness under an applied transport current. We show that, for sufficiently large thickness, the vortices and the antivo
Externí odkaz:
http://arxiv.org/abs/2303.11401
It was recently shown that a chiral topological phase emerges from the coupling of two twisted monolayers of superconducting Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ for certain twist angles. In this work, we reveal the behavior of such twisted superconduc
Externí odkaz:
http://arxiv.org/abs/2206.14937
Autor:
Berger, Jorge, Sardella, Edson
Publikováno v:
Physica C 603, 1354156 (2022)
In the description of non equilibrium situations in a superconductor at temperatures far below its critical temperature, the Keldysh-Usadel technique (KUT) is required. However, the non-stationary KUT has not been applied to realistic circuits. Moreo
Externí odkaz:
http://arxiv.org/abs/2202.02754
Autor:
Santos, Rodolfo Carvalho dos, Duarte, Elwis Carlos Sartorelli, Okimoto, Danilo, Presotto, Alice, Sardella, Edson, Motta, Maycon, Zadorosny, Rafael
Studies involving vortex dynamics and their interaction with pinning centers are an important ingredient to reach higher critical currents in superconducting materials. The vortex distribution around arrays of engineered defects, such as blind and th
Externí odkaz:
http://arxiv.org/abs/2201.11688
The generalized time-dependent Ginzburg-Landau (GTDGL) theory was first proposed to describe better gap superconductors and the phenomenon of thermal phase-slips (PSs) in defect-free systems. However, there is a lack of information about studies invo
Externí odkaz:
http://arxiv.org/abs/2105.10115
Autor:
Cadorim, Leonardo R., Sardella, Edson, Romaguera, Antonio R. de C., de Oliveira, Isaías G., Gomes, Rodolpho R., Doria, Mauro M.
M. Tinkham and P. G. de Gennes, described in their books the existence of an intermediate type-I superconductor as a consequence of an external surface that affects the well known classification of superconductors into type-I and II. Here we consider
Externí odkaz:
http://arxiv.org/abs/2012.09114
Within the framework of the generalized time-dependent Ginzburg-Landau equations, we studied the influence of the magnetic self-field induced by the currents inside a superconducting sample driven by an applied transport current. The numerical simula
Externí odkaz:
http://arxiv.org/abs/2006.01335