Photoinduced enhancement of the c-axis conductivity in oxygen-deficient YBa₂Cu₃O_x thin films

Autor(en)

W. Markowitsch, C. Stockinger, W. Lang, K. Bierleutgeb, J. D. Pedarnig, D. Bäuerle

Abstrakt

High quality thin films of oxygen-depleted YBa/sub 2/Cu/sub 3/O/sub x/ (x approximately=6.6) were prepared by pulsed-laser deposition on SrTiO/sub 3/ substrates that were cut with tilt angles of 10 degrees and 20 degrees with respect to the [001] direction, resulting in a steplike growth of the layers. The resistance showed a semiconducting behavior along the projection of the c axis to the film surface, but a metallic behavior in the perpendicular direction, indicating that the former is dominated by the c-axis resistivity and the latter by the ab-plane resistivity of YBa/sub 2/Cu/sub 3/O/sub x/. Long-term illumination of the samples with a 100 W halogen lamp resulted in a significant conductivity enhancement in both directions. The photoinduced change of the out-of-plane resistance vs temperature characteristics is comparable to the effect of large hydrostatic pressure, introducing structural changes similar to that of photoexcitation.

Organisation(en)

Elektronische Materialeigenschaften

Journal

Applied Physics Letters

Band

71

Seiten

1246-1248

Anzahl der Seiten

3

ISSN

0003-6951

DOI

https://doi.org/10.1063/1.119863

Publikationsdatum

1997

Peer-reviewed

Ja

ÖFOS 2012

503013 Fachdidaktik Naturwissenschaften, 103018 Materialphysik

Schlagwörter

Sustainable Development Goals

SDG 7 – Bezahlbare und saubere Energie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/0f321fc9-931e-43d5-b23e-069ad9b1e277