Abstract
We have studied temperature dependence of three mid-infrared absorption peaks of Sr 2CuO 2Cl 2, observed in transmission measurement; a lower-energy sharp peak and two higher-energy broad peaks. As temperature increases, the first one shows position redshift and width broadening. We relate the behaviors to Lorenzana and Sawatzky's model [J. Lorenzana, G.A. Sawatzky, Phys. Rev. Lett. 74, 1995, p. 1867] and attribute the peak to the phonon-assisted bimagnon excitation. We examine the temperature dependence of the peak width and suggest magnon scattering mechanism coupled with magnetic disorder in CuO 2 plane, in order to explain the anomalous broadening of the width around the Neel temperature.
Sign-in/Register to access full text options 
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.
