
VOLUME 53 (1991)  ISSUE 12 
PAGE 614

Magnetication vs external magnetic field in layered superconductors
Maslov S.S., Pokrovsky V.L.
For an anisotropic layered superconductor we have calculated the magnetization ve absolute value é and orientation of the external magnetic field. It displays a cusp at a field Μ = Χι(θ), where θ is the angle between the field and the layers, and a maximum at some characteristic field X = #_{s}(0) α (sini)^{1} in agreement with the experimental meaeurments by Zavaritsky N.V. and Zavaritsky V.N. We predict the existence of an intermediate critical field Μ = Μ_{3}{θ) ÏÓ (sinfl)^{1 }at which the perpendicular to the layers component of the magnetic induction first penetrates the sample. The magnetic susceptibility χ = Äí/Äè has a jump at N = The jump is very small at × > 7^{_1}, where 7 is the anisotropy coefficient. In this range of angles one can observe a cusp on a graph of χ vs )( at ë = U^This prediction of theory is in good agreement with the experiment ^{a}.

