Gv. Golubnichaya et al., THE NEGATIVE TRAPPING EFFECT IN THE MAGNETIC-FIELD DEPENDENCE OF ABSORPTION IN HIGH-TEMPERATURE SUPERCONDUCTORS, Technical physics letters, 23(3), 1997, pp. 219-220
This paper reports the first study of the absorption of an rf electrom
agnetic field in high-temperature superconducting samples of YBa2Cu3O7
-x in the range of magnetic fields corresponding to the onset of the '
'negative trapping'' effect. It is shown how additional annealing and
degradation of the sample influence the onset of the effect. A modific
ation of the model of dynamic interaction of superconducting loops is
used to explain the observed phenomena. (C) 1997 American Institute of
Physics.