A low temperature scanning tunneling microscope was used to measure the energy gap of Bi2Sr2CaCu2O8 in the direction perpendicular to the a-b plane. The derivative curve differs significantly from that expected for a Bardeen-Cooper-Schrieffer density of states. No multiple gap features have been observed. The energy gap was consistently measured to be about 21 meV.
|Number of pages||5|
|Journal||Journal of Alloys and Compounds|
|State||Published - Apr 3 1992|
Bibliographical noteFunding Information:
We gratefully thank Dr. H. J. Tao, Dr. Farun Lu and Dr. E. L. Wolf of Polytechnic University for providing the 2:2:1:2 samples for this experiment. This work is supported by the National Science Foundation (under Grant DMR 8913854) and the University of Kentucky Research Foundation.
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry