Mesoscale vortex pinning landscapes in a two component superconductor

Aguirre, C. A.; Achic, H.B.; Barba-Ortega, J.

doi:10.1016/j.physc.2018.08.010

Cited by 17 publications

(5 citation statements)

References 31 publications

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“…This method has the important characteristic of preserving the gauge invariance of Eqs. ( 2)-( 4) does not change under the transformation � = exp(i ) , ′ = + ∇ , 𝜙� = 𝜙 − χ [31][32][33][34][35] (and reference therein).…”

Section: Theoretical Formalismmentioning

confidence: 99%

Thermo-Magnetic Signature of a Superconducting Multi-band Square with Rough Surface

et al. 2021

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In the present work, we will study the effect that the surface roughness of the sample has on the magnetic and thermodynamic properties in a mesoscopic superconducting meso-square under an external magnetic field in a zero-field cooling process.We will analyze the magnetization, superconducting electronic density, free Gibbs energy, specific heat and entropy as a function of the roughness of the sample in a superconducting two-band square taking a Josephson type inter-band coupling. We show that the magnetic and thermodynamic properties depend on the roughness percentage of its surface. Our investigation was carried out by numerically solving the two-band time-dependent Ginzburg-Landau equations.

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Section: Theoretical Formalismmentioning

confidence: 99%

Thermo-Magnetic Signature of a Superconducting Multi-band Square with Rough Surface

et al. 2021

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“…Within this approximation, we can neglect the magnetic field produced by the transport current itself. Therefore, it can be treated as a two-dimensional problem The formalism used to study the system considered in Figure 1(a-b) is given by the time-dependent Ginzburg-Landau (TDGL) equations [17][18][19][20][21][22].…”

Section: Theoretical Formalismmentioning

confidence: 99%

Vortex guide under a Lorentz force.

Aguirre

Martins

Barba-Ortega

2020

AiBi Revista de Investigación, Administración e Ingeniería

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In the present work we studied the effect of the nature of the contacts, by which a weak external current is applied, in an anisotropic superconducting rectangle, on the magnetization, magnetic susceptibility, density of the Cooper pairs and (magnetic field for which the first vortices entry on the sample). The contacts are simulates by the parameter, and the anisotropy is present in sections with different critical temperatures modeling for function, both in the Ginzburg-Landau formalis. Also, the sample is embebbed in an external magnetic field . We established how the nature of the contacts and the presence of a weak Lorentz Force, influence the magnetic response and the vortex state of the sample.

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“…Tinkham [1] first showed, that even of material with κ < 1/ √ 2 can behave like type II if the film is sufficiently thin. The manipulation of single, multi, and giant vortex states in mesoscopic superconductors are very important for applications of spins, fluxtronic, medicine, etc [2,3,4,5,6,7]. It is possible that a vortex anti vortex pairs becomes stable, this stability correspond to the symmetry of the system with pinning centers [8,9], magnetic dots [10,11], arrays of small current loops, hot spot.…”

Section: Introductionmentioning

confidence: 99%

Released power in a vortex-antivortex pairs annihilation process

Aguirre¹,

Joya

Barba-Ortega

2020

Rev. UIS ing.

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In this paper, we studied the power dissipation process of a Shubnikov vortex-antivortex pair in a mesoscopic superconducting square sample with a concentric square defect in presence of an oscillatory external magnetic field. The time-dependent Ginzburg-Landau equations and the diffusion equation were numerically solved. The significant result is that the thermal dissipation is associated with a sizeable relaxation of the superconducting electrons, so that the power released in this kind of process might become calculated as a function of the time. Also, we analyzed the effect that the Ginbzurg-Landau κand deformation τparameters have on the magnetization, dissipate power and super-electrons density.

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Mesoscale vortex pinning landscapes in a two component superconductor

Cited by 17 publications

References 31 publications

Thermo-Magnetic Signature of a Superconducting Multi-band Square with Rough Surface

Thermo-Magnetic Signature of a Superconducting Multi-band Square with Rough Surface

Vortex guide under a Lorentz force.

Released power in a vortex-antivortex pairs annihilation process

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