Magnetically modulated microwave absorption (MAMMA) measurements have been performed on a superconducting Sm2-xCexCuO4-δ single crystal by sweeping the temperature at constant magnetic fields applied in different orientations. The result of each measurement is a well-defined peak, whose onset determines, in a mean field approximation, the superconducting transition. We have found that the characteristics of the MAMMA signal at any field orientation (H, θ) can be described in terms of a reduced field h = H (cos2θ + γ2sin2θ)1 2, where γ is the anisotropy parameter. The scaling of the experimental data has allowed us to determine γ ≈ 75. © 1994.
Rouco, A., Obradors, X., Briático, J., Tovar, M., Piñol, S., Fontcuberta, J., & Causa, M. T. (1994). Two dimensional superconductivity in Sm2-xCexCuO4-δ: Evidence from microwave absorption. Physica C: Superconductivity and Its Applications, 235–240(PART 3), 2027–2028. https://doi.org/10.1016/0921-4534(94)92235-7