← Back to search

Magnetic critical fields of Y-Ba-Cu-O superconductors in the Lawrence-Doniach model with inequivalent layers

L. N. Bulaevskii, I. D. Vagner

DOI 10.1103/PhysRevB.43.8694 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

The Lawrence-Doniach model with inequivalent conducting layers (isotropic CuO2 planes and CuO planes with chains) gives the positive curvature in the temperature dependence of the perpendicular upper critical field, if the weakest coupling of layers is between CuO2 and CuO planes or if the bare critical temperatures of the CuO2 and CuO layers are essentially different. In the former case Hc1 and Hc2 are anisotropic in the (a,b) plane near Tc, while in the latter case such anisotropy is absent.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
YBa2Cu3O7

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown
YBa2Cu4O8

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown

Similar papers