E. Boon, A. Roy, H. Kempen
Dec 1, 1994
Physica C-superconductivity and Its Applications
Abstract We present STM measurements on in-situ cleaved Bi 2 Sr 2 CaCu 2 O x crystals at 4.2K. By cleaving at low temperature we obtained a clean surface allowing us to image with atomic resolution. We observed a transition from clear superconductor - normal metal tunneling characteristics to charging-like characteristics within a few nanometers.