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Flux Penetration in an Anisotropic Type-II Superconductor

1969; American Institute of Physics; Volume: 183; Issue: 2 Linguagem: Inglês

10.1103/physrev.183.528

1536-6065

G. Dorer, H. E. Bömmel,

Quantum, superfluid, helium dynamics

Calculations are presented for the magnetic induction $B$ and the free energy of an anisotropic type-II superconductor near its upper critical field ${H}_{c2}$. It is shown that this field is not necessarily parallel to the externally applied magnetic field H, its direction depending on the direction of H relative to the principal axes of the Ginsburg effective-mass tensor. These results suggest that torque measurements, made on geometrically symmetrical samples, should be useful in determining the upper critical field ${H}_{c2}$ as well as the components of the effective-mass tensor.