Magnetic properties of the intermediate state in small type-I superconductors

Alexander D. Hernández; Daniel Domínguez

doi:10.1103/PhysRevB.72.020505

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Magnetic properties of the intermediate state in small type-I superconductors

Alexander D. Hernández, Daniel Domínguez

DOI 10.1103/PhysRevB.72.020505 · Physical Review B

T1

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Abstract

We present simulations of the intermediate state of type-I superconducting films solving the time-dependent Ginzburg-Landau equations, which include the demagnetizing fields via the Biot-Savart law. For small square samples we find that, when slowly increasing the applied magnetic field Ha, there is a sawtooth behavior of the magnetization and very geometric patterns, due to the influence of surface barriers; while when slowly decreasing Ha, there is a positive magnetization and symmetry-breaking structures. When random initial conditions are considered, we obtain droplet and laberynthine striped patterns, depending on Ha.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown