Experimental evidence for multi-band conduction in highly-doped La-Sr-Cu-O superconductors

We have measured the Hall coefficient in highly-doped La2-xSrxCuO4 superconductors (x=0.2 and 0.25), finding a large decrease with temperature. A good fit to the data is obtained using the two-band model involving both holes and electrons (as suggested by our earlier thermopower measurements), with the carrier-phonon interaction being relatively stronger for the holes.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/26501/1/0000037.pd