Vortex Matter in a Superconducting Square Under 2D Thermal Gradient

V-Niño, E. D.; Díaz-Lantada, Andrés; Barba-Ortega, J.

doi:10.1007/s10909-019-02158-x

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…The energy dissipation caused by the vortex motion can lead to a local temperature rise [36][37][38], and even macroscopic thermomagnetic instabilities [39][40][41][42][43]. Thus, the relationship between the thermal effect and vortex motion has received significant attention [44][45][46][47]. The mechanism of dissipation in current-carrying superconducting thin films has been numerically studied by the TDGL equations and the heat diffusion equation [48,49].…”

Section: Introductionmentioning

confidence: 99%

Manipulation of vortex arrays with thermal gradients by applying dynamic heat sources

Chen

Yong

Zhou

2021

Supercond. Sci. Technol.

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In this paper, we investigate the manipulation of vortex arrays of magnetic flux by using dynamic heat sources in the superconducting strip. The time-dependent Ginzburg–Landau (TDGL) equations and the heat diffusion equation are numerically solved to study the effect of the dynamic heat sources and the vortex dynamics of the sample. Three distinct velocity ranges were shown to occur, depending on the vortex motion and the corresponding characteristics of the induced voltage. Due to the relationship among the driving force, viscous force, and vortex–vortex interaction, the vortex motion changes from direct motion to a roughly harmonic motion with the velocity of the heat source. Meanwhile, the electromagnetic performance of the sample is also related to the heat source parameters, the applied magnetic fields and the pinning centers. In addition, the thermal effect leads to a more complex non-linear relationship between the induced voltage and the heat source velocity.

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Section: Introductionmentioning

confidence: 99%

Manipulation of vortex arrays with thermal gradients by applying dynamic heat sources

Chen

Yong

Zhou

2021

Supercond. Sci. Technol.

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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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“…Other authors found that Tc can be modified by applying electric field in a reversible way [9] - [11]. To study the effect of topological defects on the superconducting state, we solve the Ginzburg-Landau time-dependent equations (TDGL) in a mesoscopic square where the temperature T is modified locally within the sample as T(x,y)=δRandom, where δ is a constant that identifies the maximum intensity of the generated numbers and Random is a function that takes random values between 0 and 1, (see references [2] and [7]). The paper is organized as follows: in section 2, we write the dimensionless TDGL equations in an invariant zero gauge form using the auxiliary field in Cartesian coordinates.…”

Section: Introductionmentioning

confidence: 99%

Random distribution of topological defects in mesoscopic superconducting samples

2020

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In the present work we analyze the effect of topological defects at different temperatures in a mesoscopic superconducting sample in the presence of an applied magnetic field H. The time-dependent Ginzburg-Landau equations are solved with the method of link variables. We study the magnetization curves M(H), number of vortices N(H) and Gibbs G(H) free energy of the sample as a applied magnetic field function. We found that the random distribution of the anchor centers for the temperatures used does not cause strong anchor centers for the vortices, so the configuration of fluxoids in the material is symmetrical due to the well-known Beam-Livingston energy barrier.

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Vortex Matter in a Superconducting Square Under 2D Thermal Gradient

Cited by 5 publications

References 25 publications

Manipulation of vortex arrays with thermal gradients by applying dynamic heat sources

Manipulation of vortex arrays with thermal gradients by applying dynamic heat sources

Released power in a vortex-antivortex pairs annihilation process

Random distribution of topological defects in mesoscopic superconducting samples

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