Optical response of superconducting Nd/sub 1.85/Ce/sub 0.15/CuO/sub 4-y/ and YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// thin films

Author

Bhattacharya, S. ; Mao, S.N. ; Rajeswari, M. ; Jiang, W. ; Venkatesan, T.

Author_Institution

Dept. of Phys., Maryland Univ., College Park, MD, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

2535

Lastpage

2538

Abstract

The normal state and transition edge optical response of epitaxial thin films of n-type superconductor Nd/sub 1.85/Ce/sub 0.15/CuO/sub 4-y/ has been measured. In contrast to the optical response of p-type superconductors such as YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// the normal state optical response of these films were not proportional to the temperature derivative of the resistance. The normal state optical response of films with different transition temperature (and, therefore, different oxygen content) were also remarkably different from each other. We attribute the observation of anomalous optical response to the possible presence of photoconductivity in Nd/sub 1.85/Ce/sub 0.15/CuO/sub 4-y/. We also discuss the feasibility of fabricating bolometers based on superconducting p-n bilayers.<>

Keywords

barium compounds; cerium compounds; high-temperature superconductors; neodymium compounds; photoconductivity; superconducting epitaxial layers; yttrium compounds; Nd/sub 1.85/Ce/sub 0.15/CuO/sub 4-y/; Nd/sub 1.85/Ce/sub 0.15/CuO/sub 4/; YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//; YBa/sub 2/Cu/sub 3/O/sub 7/; bolometers; epitaxial thin films; n-type superconductor; normal state; optical response; oxygen content; p-type superconductor; photoconductivity; resistance; superconducting p-n bilayers; temperature derivative; transition edge; transition temperature; Josephson junctions; Neodymium; Optical films; Superconducting devices; Superconducting epitaxial layers; Superconducting films; Superconducting materials; Superconducting thin films; Superconducting transition temperature; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403106

Filename

403106