We gratefully acknowledge valuable discussions with Y. Bruynseraede, T. Endo, A. Gilahert, G. Guntherodt, J. Hasen, D. Lederman, J. Martin, J. Santamaria, P. Seidel, and M. Velez. This work was supported by EPRI.
Persistent photoinduced effects in high-Te superconductors†
Article first published online: 29 OCT 2004
Copyright © 1997 Verlag GmbH & Co. KGaA, Weinheim
Volume 9, Issue 3, pages 271–273, March 1997
How to Cite
Hoffmann, A., Reznik, D. and Schuller, I. K. (1997), Persistent photoinduced effects in high-Te superconductors. Adv. Mater., 9: 271–273. doi: 10.1002/adma.19970090321
- Issue published online: 29 OCT 2004
- Article first published online: 29 OCT 2004
The reaction of high-temperature cuprate superconductors to illumination differs from the reaction produced in conventional superconductors. Two such effects, reviewed here, are persistent photoconductivity and persistent photoinduced superconductivity. For example, REBa2Cu3Ox thin films show a decrease in the normal state resistance and an increase of Tc which persist for a long time at low temperatures (< 100 K). The experimental investigations and results are briefly presented, before two alternative theoretical models are considered.