ELECTRON-TUNNELING SPECTROSCOPY ON POLY-CRYSTALLINE AND SINGLE-CRYSTALLINE RB3C60

Authors
JESS P BEHLER S BERNASCONI M THOMMENGEISER V LANG HP BAENITZ M LUDERS K GUNTHERODT HJ
Citation
P. Jess et al., ELECTRON-TUNNELING SPECTROSCOPY ON POLY-CRYSTALLINE AND SINGLE-CRYSTALLINE RB3C60, Physica. C, Superconductivity, 235, 1994, pp. 2499-2500
Citations number
8
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
4
Pages
2499 - 2500
Database
ISI
SICI code
0921-4534(1994)235:<2499:ESOPAS>2.0.ZU;2-Q
Abstract
The energy gap Delta of the superconducting compound Rb3C60 is determi ned by electron tunneling spectroscopy in high vacuum using a low temp erature scanning tunneling microscope. A single crystalline sample sho ws a significantly larger gap value(Delta=7.1 meV) than a polycrystall ine sample (Delta approximate to 2-4 meV). This behavior is attributed to larger local variation of stoichiometry in the polycrystalline sam ple.