SPATIALLY-RESOLVED TUNNELING SPECTROSCOPY ON BI2SR2CACU2O8 SINGLE-CRYSTALS

Authors
HUBLER U JESS P BEHLER S LANG HP GUNTHERODT HJ
Citation
U. Hubler et al., SPATIALLY-RESOLVED TUNNELING SPECTROSCOPY ON BI2SR2CACU2O8 SINGLE-CRYSTALS, Helvetica Physica Acta, 68(5), 1995, pp. 500-501
Citations number
2
Categorie Soggetti
Physics
Journal title
Helvetica Physica Acta → ACNP
ISSN journal
00180238
Volume
68
Issue
5
Year of publication
1995
Pages
500 - 501
Database
ISI
SICI code
0018-0238(1995)68:5<500:STSOBS>2.0.ZU;2-U
Abstract
The superconducting energy gap Delta of the high temperature supercond uctor Bi2Sr2CaCu2O8 is determined using a home-built high vacuum low t emperature scanning tunneling microscope. From numerically derived dI/ dV spectra acquired at different locations on the surface gap values o f Delta = 31 +/- 5 meV are obtained (Dynes fit). Other dI/dV curves sh ow a V-shaped background suggesting a contamination layer present on t he sample surface.