SURFACE OXYGEN AND ELECTRICAL-RESISTANCE OF YBA2CU4O8

Authors
SAITO S ISHIHARA M TANI T MAEDA T WATANABE N RITTAPORN I KOSHIZUKA N
Citation
S. Saito et al., SURFACE OXYGEN AND ELECTRICAL-RESISTANCE OF YBA2CU4O8, Applied surface science, 101, 1996, pp. 260-263
Citations number
7
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
101
Year of publication
1996
Pages
260 - 263
Database
ISI
SICI code
0169-4332(1996)101:<260:SOAEOY>2.0.ZU;2-C
Abstract
The relationship between the intensity of the oxygen spectra from seco ndary ion mass spectroscopy (SIMS) and the electrical resistance in bu lk was investigated for YBa2Cu4O8 in comparison with Bi2Sr2CaCu2O8. In spite of the change in the intensity of the oxygen spectra, the elect rical resistance in bulk was almost constant up to the annealing proce ss at similar to 300 degrees C. The change in the work function of YBa 2Cu4O8 was also measured in order to characterize the surface electron ic state. Superconductivity both at the surface and in bulk is discuss ed.