Polarized-optics contrast in Y1Ba2Cu3O7-x high-temperature superconductors
Vlasko-Vlasov V. K. , Indenbom M. V., Osip'yan Yu. A.
The contrast between twins in reflected polarized light has been studied on various faces of orthorhombic Y iBa2Cu307 _ x single crystals. The results show that only the component of the light which has a polarization along the Cu-O chains in the (001) basal plane undergoes a phase delay during reflection. This result may be evidence in favor of a ID conductivity in rare-earth cuprates.