Hall effect in Bi‐Sr‐Ca‐Cu‐O thin films

Abstract
Resistivity and Hall effect are measured in the a‐b plane for thin films of Bi2Sr2CaCu2O8 and Bi2Sr2Ca2Cu3O1 0superconductors prepared by laser ablationdeposition. The Hall coefficient shows a maximum at 150 K for both compounds which could be associated with bipolaron formation.