| タイトル | Optical and electrical properties of thin superconducting films |
| 本文（外部サイト） | http://hdl.handle.net/2060/19910018642 |
| 著者（英） | Jing, Feng Chen; Covington, Billy C. |
| 著者所属（英） | Sam Houston State Univ. |
| 発行日 | 1990-12-31 |
| 言語 | eng |
| 内容記述 | Infrared spectroscopic techniques can provide a vital probe of the superconducting energy gap which is one of the most fundamental physical properties of superconductors. Currently, the central questions regarding the optical properties of superconductors are how the energy gap can be measured by infrared techniques and at which frequency the gap exists. An effective infrared spectroscopic method to investigate the superconducting energy gap, Eg, was developed by using the Bomem DA 3.01 Fourier Transformation Spectrophotometer. The reflectivity of a superconducting thin film of YBaCuO deposited on SrTiO3 was measured. A shoulder was observed in the superconducting state reflectance R(sub S) at 480/cm. This gives a value of Eg/kT(sub c) = 7.83, where k is the Boltzmann constant and T(sub c) is the superconducting transition temperature, from which, it is suggested that YBaCuO is a very strong coupling superconductor. |
| NASA分類 | OPTICS |
| レポートNO | 91N27956
NAS 1.26:188668
NASA-CR-188668 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/131563 |
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