Abstract
Abstract A brief description of the basic principles of the theory of scanning tunneling microscopy and spectroscopy is given. This paper presents results of our experimental investigations of Ni clusters deposited on ab-surface of Bi2Sr2CaCu2O8+y (BSCCO) single crystals or highly oriented pyrolytic graphite (HOPG) substrates. The microclusters were produced by the plasma gas condensation or evaporator with integral flux monitor. The scanning tunneling spectroscopy was performed at 24 K and at room temperature. The spectra measured above the Ni clusters and directly above the substrate reveal remarkable differences. Point contact tunneling (PCT) measurements on the overdoped regime Bi2Sr2CaCu2O8+y single crystals show sharp zero bias conductance peak (ZBCP) at zero bias voltage. The ZBCP observation gives strong evidence that the order parameter is of d-wave symmetry for overdoped BSCCO single crystals.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.