Accession Number : ADA268148


Title :   Basic Optical Studies of High T sub c Oxide Superconductors


Descriptive Note : Final rept. 15 Jan 90-14 Jan 93,


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE CENTER FOR MATERIALS SCIENCE AND ENGINEERING


Personal Author(s) : Dresselhaus, M S ; Dresselhaus, G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268148.pdf


Report Date : 15 Jun 1993


Pagination or Media Count : 9


Abstract : During the 1992-93 year of the research program on Basic Optical Studies of High T sub c Oxide Superconductors, the effort was focused on a number of projects. The collaborative study of the microwave properties of superconductors with researchers at Rome Labs and the MIT Lincoln Laboratory continued and significant results were obtained on the microwave behavior in the non-linear high rf power regime for YBa2Cu307-x and this work will be a major part of the Ph.D. thesis of Paul Nguyen. During this year we continued study of the effect of halogen doping on the restoration of superconductivity to YBCO samples previously deoxygenated, and hence rendered non-superconducting. Extensive progress was also made on our new effort in studying superconductivity and the associated phonon spectra and electron-phonon interaction in the alkali metal doped C60 materials. We review in this report the progress that was made on each of these projects, referring to the publications that were prepared on each of the topics under investigation.


Descriptors :   *OPTICAL PROPERTIES , *SUPERCONDUCTORS , *HIGH TEMPERATURE SUPERCONDUCTORS , METALS , MICROWAVES , SPECTRA , COPPER COMPOUNDS , YTTRIUM COMPOUNDS , MITES , ALKALI METALS , SUPERCONDUCTIVITY , HALOGENS , BARIUM COMPOUNDS , PHONONS , DOPING , OXIDES , ELECTRONS , THESES , INTERACTIONS


Subject Categories : Electrical and Electronic Equipment
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE