Released power in a vortex-antivortex pairs annihilation process

Aguirre, C. A.; Joya, M. R.; Barba-Ortega, J.

doi:10.18273/revuin.v20n1-2021014

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…The time-dependent Ginzburg-Landau (TDGL) formalism relates the superconducting order parameter ψ, the vector potential A, and the scalar electric potential Φ, as can be seen in the Equation (1) and Equation (2) [16,17].…”

Section: Theoretical Formalismmentioning

confidence: 99%

Influence of surface defects on the vortex penetration and arrangement at mesoscopic superconducting samples

Benites,

Presotto,

Barba-Ortega

et al. 2024

J. Phys.: Conf. Ser.

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All superconductor applications lie on carry dissipationless current; however, in the presence of external magnetic fields, including the self-field, vortices penetrate the sample, and their dissipative motion generates resistive states. Thus, once the superconducting state survives for higher magnetic fields due to the presence of vortices, those specimens cannot move to increase the material’s critical current density; thus, in this work, we studied the influence of surface defects on the vortex penetration at square mesoscopic superconducting materials using the time-dependent Guinzburg-Landau framework. The lateral size of the samples was 12 times the coherence length at zero Kelvin, with defects distributed in two opposite borders. The main result showed that the currents crowd around the surface defects are responsible for vortex penetration at 60% of critical temperature.

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Section: Theoretical Formalismmentioning

confidence: 99%

Influence of surface defects on the vortex penetration and arrangement at mesoscopic superconducting samples

Benites,

Presotto,

Barba-Ortega

et al. 2024

J. Phys.: Conf. Ser.

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“…We present the numerical solution for a system of extensive current importance, which are those systems that present coexistence of superconductivity and ferromagnetism, the most innovative are those materials known as nickelates [21], [22], [23], [24], [25], [26], [27], [28], [29], and superconductors [30], [31], [32]. With this, in Figure 4 we present the crystalline structure used for the study using the BdG formalism.…”

Section: Numerical Solution Of the Klein-gordon And Bogoliubov-degenn...mentioning

confidence: 99%

Application of the Klein-Gordon and Bogoliubov-deGennes theories to Nickelates

2023

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In the present work we show the generalities of the classical ﬁeld theory (CFT), we study its extension to the quantum ﬁeld theory (QFT), where as an example of numerical analysis and combination with the ﬁeld theory technique, we solve a system Klein-Gordon type (KGS) in two space-time dimensions (1+1) studying its stability through the spectral parameter λ(k), principle of convergence due to the parameters of the numerical network and the solution for the ﬁeld ф (x;t), obtaining novel results. Also, we brieﬂy study the technique of creation and destruction ladder operators from the perspective of the quantum harmonic oscillator, to deﬁne some properties and extensions to the problem in canonical quantization. Finally, we apply the topics studied to a problem of unconventional superconductivity in Nickelates compounds by solving the system of Bogoliubov-deGennes (BdG) Equations in the mean expansion of the ﬁeld, obtaining the superconducting energy band.

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