Fermi-liquid behavior of quasiparticle scattering in the normal state of BaFe$_{2}$(As$_{1-x}$P$_{x})_{2}$*

We present studies of the galvanomagnetic effects of compensated BaFe$_{2}$(As$_{1-x}$P$_{x})_{2}$ (x=0.32$\sim $0.6) superconductors. The magnetoresistance follows the relaxed Kohler's scaling for all doping levels. Using a two-band model, we quantitatively extracted the scattering parameter m*/$\tau $ and the carrier density of the electron and hole bands. The temperature dependence of the carrier concentration reveals the semimetal properties of BaFe$_{2}$(As$_{1-x}$P$_{x})_{2}$. The Fermi-liquid behavior, m*/$\tau \sim $T$^{2}$, is observed from optimal doped x=0.32 to over-doped x=0.6 crystals, suggesting that the proximity of the SDW state does not play an important role in transport. Our analysis suggests that the normal state transport properties of BaFe$_{2}$(As$_{1-x}$P$_{x})_{2}$ can be well understood in the framework of a compensated two-band Fermi-liquid semimetal.