London penetration depth of Fe-based superconductors

Name: Arpapong Changjan

Organization : Pathumwan Institute of Technology, Faculty of Science and Technology, Department of science an Mathematics

keyword: Fe-based superconductors

; London penetration depth

; Ginzburg-Landau theory

Abstract: 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 supercnductors 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 nagnetic 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 superconduxtors 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 the of Fe-based superconductors is derived analytically. Finally, the temperature dependence of

Patumwan Institute of Technology.Library

Address: BANGKOK

Email: somsuay12@hotmail.com

Created: 2015

Modified: 2015-02-23

Issued: 2015-02-23

บทความ/Article

application/pdf

eng

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