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Proceedings Paper

Pulsed-laser deposition of YBa2Cu307-La0.67Sr0.33MnO3 thin film multilayers for spin injection devices
Author(s): Douglas B. Chrisey; Jeonggoo Kim; Rhonda M. Stroud; Dan Koller; Michael S. Osofsky; Robert J. Soulen Jr.; J. M. Byers; Charles R. Eddy Jr.; Raymond C. Y. Auyeung; James S. Horwitz
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Paper Abstract

Pulsed laser deposition has been used for the growth of high quality YBa2Cu3O7 and La0.67Sr0.33MnO3 thin films and multilayers for electronic device applications. In particular, YBa2Cu3O7 - (SrTiO3, CeO2) - La0.67Sr0.33MnO3 trilayer devices were fabricated to study the supercurrent suppression by the injection of a spin-polarized quasiparticle current. Our results show that the critical current for a YBa2Cu3O7 - 50 angstroms SrTiO3 - La0.67Sr0.33MnO3 device was found to decrease from 120 mA to 15 mA, for an injection current of 60 mA of spin polarized current yielding a negative current gain of approximately 1.8. The effect of film microstructure on the critical current suppression was investigated. Defects in the SrTiO3 and CeO2 layers were found to control the device properties. Once optimized, spin injection represents a new approach to fabricating superconducting transistors which could impact electronic systems for many important next generation.

Paper Details

Date Published: 3 June 1998
PDF: 8 pages
Proc. SPIE 3274, Laser Applications in Microelectronic and Optoelectronic Manufacturing III, (3 June 1998); doi: 10.1117/12.309523
Show Author Affiliations
Douglas B. Chrisey, Naval Research Lab. (United States)
Jeonggoo Kim, Naval Research Lab. (United States)
Rhonda M. Stroud, Naval Research Lab. (United States)
Dan Koller, Naval Research Lab. (United States)
Michael S. Osofsky, Naval Research Lab. (United States)
Robert J. Soulen Jr., Naval Research Lab. (United States)
J. M. Byers, Naval Research Lab. (United States)
Charles R. Eddy Jr., Naval Research Lab. (United States)
Raymond C. Y. Auyeung, Naval Research Lab. (United States)
James S. Horwitz, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 3274:
Laser Applications in Microelectronic and Optoelectronic Manufacturing III
Jan J. Dubowski; Peter E. Dyer, Editor(s)

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