Potential of NdCeCuO thin films for electronic applications

Author

Kussmaul, A. ; Tedrow, P.M. ; Gupta, A.

Author_Institution

Francis Bitter Nat. Magnet Lab., Cambridge, MA, USA

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1550

Lastpage

1551

Abstract

Films of NdCeCuO with high crystalline quality (channeling yield of 6%) were deposited on the low-loss material LaAlO/sub 3/, making it possible to measure the microwave surface losses at 18.29 GHz. An encouraging value of 1 m Omega was found at 4.2 K. The T/sub c/ is still lower than on SrTiO/sub 3/, but this is attributed to the fact that the deposition parameters have not yet been explored as systematically as for SrTiO/sub 3/. The deposition on artificial SrTiO/sub 3/ bicrystals yields grain boundaries with nonlinear I-V characteristics. The dynamic conductance looks similar to that observed on tunnel junctions of other high-T/sub c/ compounds, suggesting that quasiparticle tunneling is taking place for high-angle grain boundaries.<>

Keywords

cerium compounds; grain boundaries; high-temperature superconductors; neodymium compounds; superconducting epitaxial layers; superconductive tunnelling; 18.29 GHz; 4.2 K; HTSC; LaAlO/sub 3/; NdCeCuO thin films; artificial SrTiO/sub 3/ bicrystals; channeling yield; deposition parameters; dynamic conductance; electronic applications; epitaxial films; grain boundaries; high crystalline quality; high-angle grain boundaries; laser ablation; low-loss material; microwave surface losses; nonlinear I-V characteristics; quasiparticle tunneling; Annealing; Laser ablation; Substrates; Superconducting epitaxial layers; Superconducting films; Superconducting magnets; Superconducting microwave devices; Superconducting thin films; Transistors; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233370

Filename

233370