Numerical simulation of the response of a superconducting film to an alternating magnetic field and the estimation of the possibility of determining the London penetration depth

AbstractBased on the solution of the hydrodynamic equations and Maxwell’s equations, we show that an external quasi-homogeneous magnetic field leads to the emergence of a secondary electric field that is resulted from a nonlinear effect over magnetic potential A . This field is proved to exist in the region with a depth of $$\delta {\text{/}}2$$ , where δ is the London penetration depth. The hydrodynamic flow velocity is estimated.

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Magnetic-field dependence of the London penetration depth of Bi2Sr2CaCu2Oy

Physica C Superconductivity ◽

10.1016/0921-4534(94)92126-1 ◽

1994 ◽

Vol 235-240 ◽

pp. 1809-1810

Author(s):

A. Maeda ◽

Y. Iino ◽

T. Hanaguri ◽

N. Motohira ◽

K. Kishio

Keyword(s):

Magnetic Field ◽

Penetration Depth ◽

Field Dependence ◽

Magnetic Field Dependence ◽

London Penetration Depth

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London Penetration Depth of Fe-Based Superconductors

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.979.297 ◽

2014 ◽

Vol 979 ◽

pp. 297-301 ◽

Cited By ~ 1

Author(s):

Arpapong Changjan ◽

Pongkaew Udomsamuthirun

Keyword(s):

Magnetic Field ◽

Free Energy ◽

Penetration Depth ◽

Electrical Resistance ◽

Critical Magnetic Field ◽

London Penetration Depth ◽

Iron Compounds ◽

Ginzburg Landau ◽

The Magnetic Field ◽

Very High

Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. Fe-based superconductors are superconductors whose containing iron compounds and having a very high critical magnetic field. London penetration depth can assist in the study of the behavior of the critical magnetic field. The London penetration depth is the distance to which a magnetic field penetrates into a superconductor and becomes equal to 0.367879 times that of the magnetic field at the surface of the superconductor. In this paper, the London penetration depth of Fe-based superconductors is studied by Ginzburg-Landau scenery. Free energy of Fe-based superconductors is assumed by modified the free energy of two-band magnetic superconductors model and theof Fe-based superconductors is derived analytically. Finally, the temperature dependence of is investigated and applied to Single-Crystal superconductors.

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Magnetic Attenuation in Superconducting Cylinders by Beer-Lambert Modified Model

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.548-549.211 ◽

2014 ◽

Vol 548-549 ◽

pp. 211-215

Author(s):

Arpapong Changjan ◽

Sathit Punchoo ◽

Pongkaew Udomsamuthirun

Keyword(s):

Magnetic Field ◽

Penetration Depth ◽

Applied Magnetic Field ◽

London Penetration Depth ◽

Modified Model ◽

Absorption Of Light ◽

Lambert Model

In this research, we study the magnetic attenuation of the superconducting cylinders by Beer-Lambert modified model. In optics, the Beer-Lambert model relates the absorption of light to the properties of the material through which the light is traveling. We modified Beer-Lambert model to describe behavior of magnetic field attenuation by superconducting cylinders. The penetrate field and London penetration depth are derived analytically. Finally, the attenuation of applied magnetic field is investigated and applied to cylindrical superconductors.

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London Penetration Depthin λ(T) in Type 1.5 Superconductor by Ginzburg-Landau Approach

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.770.291 ◽

2013 ◽

Vol 770 ◽

pp. 291-294 ◽

Cited By ~ 3

Author(s):

N. Niyomsilpchai ◽

A. Changjan ◽

Pongkaew Udomsamuthirun

Keyword(s):

Magnetic Field ◽

Free Energy ◽

Penetration Depth ◽

Band Model ◽

Type I ◽

London Penetration Depth ◽

Ginzburg Landau ◽

Type Ii Superconductor ◽

New Type ◽

The Magnetic Field

The London penetration depth is the distance to which a magnetic field penetrates into a superconductor and becomes equal to 0.367879 times that of the magnetic field at the surface of the superconductor. The type 1.5 superconductor is the new type of superconductor that the value of Ginzburg-Landau parameter is between the type I and type II superconductor. In this paper, the London penetration depth of type 1.5 superconductor is studied by Ginzburg-Landau approach. The system of free energy of type 1.5 superconductor is assumed by modified the free energy of two-band model and theof type 1.5 superconductor is derived analytically. Finally, the temperature dependence of London penetration depth is investigated.

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