Aa. Gallitto et Ml. Vigni, A STUDY OF THE UPPER CRITICAL-FIELD AND ANISOTROPY IN YBA2CU3O7 SINGLE-CRYSTALS, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 16(10-11), 1994, pp. 1895-1901
We report a set of experimental results on second- and third-harmonic
generation at microwave frequencies in YBa2Cu3O7 Single crystals near
T-c. The investigation of the harmonic signals as a function of the in
tensity and orientation of the d.c. magnetic field yields information
on the upper critical field and crystal anisotropy.