MULLER, M and BASUN, S and GLASER, S and RENK, KF (1991) STUDY OF THE SUBMILLIMETER ABSORPTIVITY OF HIGH-TC SUPERCONDUCTORS BY PHOTOTHERMAL INTERFERENCE SPECTROSCOPY. APPLIED PHYSICS LETTERS, 59 (26). pp. 3476-3478. ISSN 0003-6951,
Full text not available from this repository.Abstract
We report on the study of the submillimeter absorptivity of high T(c) superconductors by a new method, the photothermal interference spectroscopy. Absorption in a sample leads to a temperature change of the sample and, by heat transfer, also of a gas volume adjacent to the sample and to a change of refractive index in the gas volume that we detect by an interferometric method. We demonstrate the feasibility of the method by determination of the absorptivity of high T(c) superconducting YBa2Cu3O7-delta samples for submillimeter radiation at a frequency near 1 THz. The absorptivity shows a peak at T(c), that is most likely due to fluctuation effects, a strong drop below T(c) and a finite value at low temperatures, with a peak near 15 K.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FAR-INFRARED REFLECTIVITY; CONDUCTIVITY; YBA2CU3O7; CRYSTALS; STATE; GAP; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:46 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54757 |
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