Micro-Raman spectroscopy of laser processed YBa2Cu3O7-delta thin films Academic Article uri icon

abstract

  • The oxygen content and the local oxygen arrangement of laser processed YBa2 Cu 3O7-δ (YBCO) thin films grown on LaAlO3 substrates have been probed by micro-Raman spectroscopy On these films, channels for easy vortex motion have been laser written (LW) into the bridge constrictions by heat-induced, partial depletion of oxygen from the laser- illuminated areas of these films. Raman microscopy has been used to investigate and characterize the oxygen content and structure of the laser written channels. Direct evidence for local micro-structural changes in the film during the LW process is presented and the heat affected zone, surrounding the channel borders, has been mapped.

publication date

  • January 1, 2011