Reich S, Leitus G, Popovitz-Biro R, Schechter M
Department of Materials and Interfaces, The Weizmann Institute of Science, Rehovot 76100, Israel.
Phys Rev Lett. 2003 Oct 3;91(14):147001. doi: 10.1103/PhysRevLett.91.147001. Epub 2003 Sep 29.
The magnetization of an ensemble of isolated lead grains of sizes ranging from 4 to 1000 nm is measured. A sharp disappearance of the Meissner effect with a lowering of the grain size is observed for the smaller grains. This is a direct observation by magnetization measurement of the occurrence of a critical particle size for superconductivity, which is consistent with Anderson's criterion.
