Anomalous Magnetoresistance in Pb-doped Bi${}_2$Sr${}_2$Co${}_2$O${}_y$ Single Crystals

X. G. Luo, X. H. Chen, G. Y. Wang +5

Magnetoresistance (MR) of the Bi${}_{2-x}$Pb${}_x$Sr${}_2$Co${}_2$O${}_y$ ($x$=0, 0.3, 0.4) single crystals is investigated systematically. A nonmonotonic variation of the isothermal in-plan…