Shubnikov state in complex geometry Type-II Technetium device

3rd International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Barba-Ortega, J.^1 ; Gonzalez, J.D.^2 ; Aguilar, J.L.^2

Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia^1

Grupo en Teoría de la Materia Condensada, Universidad Del Magdalena, Santa Marta, Colombia^2

关键词: Critical magnetic field;    Critical temperatures;    External magnetic field;    Ginzburg-Landau parameters;    Magnetic moment density;    Material characteristics;    Type II superconductors;    Weak-coupling superconductors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/574/1/012159/pdf
DOI  :  10.1088/1742-6596/574/1/012159

来源: IOP

【 摘 要 】

We investigate numerically the flux quantum configurations and some thermodynamic properties of a superconducting Technetium film by using the link variables technique for one shape of circular geometry. The Technetium exhibits superconductivity properties indicated by to an extrapolated critical magnetic field value of Hc(T 0) 1410 Oe, a Ginzburg-Landau parameter of κ 0.92, and a critical temperature Tc 7.86K, being the magnetic behavior of this material characteristic of a type-II superconductor with a weak-coupling superconductor of the BCS type. The studied sample is a circular sector with angular width θ 7π/4 surrounded by a dielectric material and submitted to external magnetic field applied perpendicular to its plane. We evaluate the magnetic moment density, Shubnikov state and free Gibbs energy as a function of the external magnetic field.