Abstract
Abstract High temperature Raman spectra on single crystals of YBa2Cu3O7-δ, TlBa2CaCu2O7-δ and Tl2Ba2CaCu2O8-δ show significant softening and broadening of apical oxygen vibrational modes above 300 K. This behaviour appears to be a common in superconducting oxides with a pyramidal O structure surrounding planar Cu ions. Although this high-temperature behaviour is characteristic of anharmonic modes, we find that a simple double well static anharmonic potential cannot fully explain these observations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
