Kamaras et al. Reply: The Comment by Orenstein andRapkine makes the point that the infrared reflectance of high-TV superconductors is affected by crystal anisotropy in a sample of large randomly oriented grains. They suggest that the reflectance can be modeled with use of a simple Drude dielectric function for the a~b plane,with plasma frequency co p = 2.5 eV (20000 cm -1 ) and inverse lifetime l/r=0.6eV (5000 cm" 1 ) (T = 1X10~1 5 sec). This Drude dielectric function is characterized by a mode at zero frequency, broadened to -1/T by scattering processes.Although the point about anisotropy is valid (as seen already by fits to optical data obtained either by averaging reflectances 1 or from an effective-medium treatment 2 ), we disagree strongly with the use of a Drude dielectric function to describe the infrared spectrum. Considerable evidence points to a strong non-Drude absorption in the mid infrared in the high-7 c superconductors.In the Drude model, the same relaxation time governs the dc conductivity,
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.