Inhaltszusammenfassung

Biaxial textured (1 1 9) oriented Bi2Sr2CaCu2O8 ? thin films were fabricated by DC-Magnetron sputtering on vicinal (1 1 0) SrTiO3 substrates. The crystal orientation and stochiometry of the films were obtained from precise X-ray diffraction measurements in four-circle geometry. According to anisotropic transport measurements, the superconducting transition temperature is approximately 47 K and the normal state resistivities along two perpendicular paths differ by a factor of 13.5. Transversal...Biaxial textured (1 1 9) oriented Bi2Sr2CaCu2O8 ? thin films were fabricated by DC-Magnetron sputtering on vicinal (1 1 0) SrTiO3 substrates. The crystal orientation and stochiometry of the films were obtained from precise X-ray diffraction measurements in four-circle geometry. According to anisotropic transport measurements, the superconducting transition temperature is approximately 47 K and the normal state resistivities along two perpendicular paths differ by a factor of 13.5. Transversal thermoelectric effects were investigated by measuring thermovoltages transverse to temperature gradients parallel to the surface normal induced by pulsed laser irradiation. At room temperature and energy densities of 15 mJ/cm2 thermovoltages up to 355 mV were obtained. » weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
Physik der kondensierten Materie

DDC Sachgruppe:
Physik