Dendritic instability of the magnetic flux in thermally anisotropic type-II superconductors

E. E. Dvash; I. Shapiro; B. Ya. Shapiro

doi:10.1103/PhysRevB.80.134522

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Dendritic instability of the magnetic flux in thermally anisotropic type-II superconductors

E. E. Dvash, I. Shapiro, B. Ya. Shapiro

DOI 10.1103/PhysRevB.80.134522 · Physical Review B

T1

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Abstract

The thermomagnetic instability of the Bean critical state in a layered type-II superconducting slab subjected to an external magnetic field increasing with constant rate is studied theoretically. It is shown that the strong anisotropy of thermal conductivity significantly affects the instability onset. By applying a linear analysis of Maxwell and thermal diffusion equations, the criteria for the nonuniform instability, the characteristic size of the flux pattern, and the stability-instability coexistence line were obtained.

Source-reported materials — not catalogue approval

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