Abstract
Cd2Re2O7 is a pyrochlore superconductor with a transition temperature Tc near 1 K. We report on the far-infrared optical properties of Cd2Re2O7 at temperatures above and below Tc with a particular emphasis on changes in the spectrum below Tc. Seventeen phonon modes are observed in the normal state optical conductivity spectrum of Cd2Re2O7 at low temperatures in good agreement with a factor group analysis. In the superconducting state, a softening (∼1 cm−1) of the phonon modes at 35 and 61 cm−1 occurs and thermal reflectance spectra show the development of two additional strong absorption features, near 9.6 and 19.3 cm−1. The dominant presence of lattice vibrational modes in the optical spectrum suggests that electron–phonon interaction plays an important role in the normal and superconducting state properties of Cd2Re2O7.
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.
