Vn. Apakina et al., ELECTROMAGNETIC-FIELD INDUCED DIELECTRIC RESONANCE IN THE YBA2CU3O7 SINGLE-CRYSTAL, Czechoslovak journal of Physics, 46, 1996, pp. 1125-1126
First observations of the microwave dielectric resonance in a single c
rystal of the YBa(2)Ci(3)O(7) are presented. With the YBa2Cu3O7 single
crystal inserted into the microwave (f similar to 9 GHz) resonator we
observe the appearance of the new intense and broad transmission band
. The transmittivity value of this band exhibits remarkable temperatur
e hysteresis. The data show that the observed birefringence is the int
rinsic property of the HTSC material resulting from the spatial disper
sion and nonlinearity of HTSC electric properties due to the metal-ins
ulator-type instability.