A. Deville et al., LINEAR AND NONLINEAR ASPECTS OF THE FIELD-DEPENDENT MICROWAVE LOSSES IN YBA2CU3O7 CRYSTALS, Journal de physique. IV, 3(C2), 1993, pp. 83-86
We have measured the surface resistance in a static magnetic field, be
tween 0 and 2 T, at a fixed temperature below T(C). We compare the res
ults with those using a modulation field, and discuss them within exis
ting theories.